Difference between revisions of "Timeline of Twitter"

This is a timeline of microblogging service [[Twitter]].

| March 2006{{snd}}March 2007 || Twitter launches as a product of parent company [[Odeo]]. It grows slowly until March 2007, where usage grows dramatically after it is showcased at the [[South by Southwest Interactive]] (SXSW) conference.

| April 2007{{snd}}October 2008 || Twitter grows rapidly under CEO [[Jack Dorsey]], completing two funding rounds and launching official support for [[hashtag]]s.

| October 2008{{snd}}October 2010 || Jack Dorsey steps down, and [[Evan Williams (Internet entrepreneur)|Evan Williams]] takes over as CEO. Twitter raises money, gets celebrity endorsements and publicity, and continues to grow rapidly. The first tweet from space occurs during this period. Twitter also announces that it will start allowing for advertising in the form of ''promoted tweets'' – "ordinary tweets that businesses and individuals want to highlight to a wider group of users."

| October 2010{{snd}}October 2013 || Evan Williams steps down as CEO, and [[Dick Costolo]] takes over. The company starts making acquisitions, closes a $800 million Series G, puts its advertising plans to fruitions, launches site redesigns, and continues to grow.

| October 2013{{snd}}present || Twitter announces plans and files relevant legal documents in October 2013 so as to go public. In November 2013, it has its [[initial public offering]]. Post-IPO, the company's pace of acquisitions increases dramatically.

| 2004 || November || Prelude || [[Odeo]], Twitter's parent company, is started.

| 2006 || February 26–27 || Creation || [[Jack Dorsey]], [[Noah Glass]], [[Evan Williams (Internet entrepreneur)|Evan Williams]] and [[Biz Stone]] discuss the idea of using text messaging to share statuses, and decide to work on the project. The original idea is attributed to [[Jack Dorsey]], and called the ''status '' concept.<ref>{{cite book|title = ''Hatching Twitter''|last = Bilton|first = Nick}}, Chapter II, Section ''Status'', Pages 55-58</ref>

| 2006 || Early March || Creation || The name ''Twitter'' (spelt '''twttr''' at the time) is chosen for the service. The idea for the name is attributed to [[Noah Glass]].<ref>{{cite book|title = ''Hatching Twitter''|last = Bilton|first = Nick}}, Chapter II, Section ''Twitter'', Pages 61-64</ref><ref>{{Cite web|url=http://www.businessinsider.com/forgotten-twitter-co-founder-noah-glass-2013-10|title = Here's What Happened To Forgotten Twitter Co-Founder Noah Glass After He Was Kicked Out Of The Company|last = D'Onfro|first = Julian|date = October 9, 2013|accessdate = January 23, 2014|publisher = ''[[Business Insider]]''}}</ref>

| 2006 || March 21 || Creation || Twitter is officially set up and [[Jack Dorsey]] sends the first tweet.<ref name=Dorsey2006>{{cite web|title=just setting up my twttr |url=https://www.twitter.com/jack/status/20 |date=March 21, 2006 |author=Dorsey, Jack |publisher=Twitter |accessdate=February 4, 2011 |authorlink=Jack Dorsey}}</ref>

| 2006 || July 15 || Media coverage || Noah Glass tells [[Om Malik]] of [[GigaOm]] about Twitter (then called '''twttr'''), and Malik writes an article about it on GigaOm.<ref>{{cite web|url=http://gigaom.com/2006/07/15/valleys-all-twttr/|title = Silicon Valley’s All Twttr|last = Malik|first = Om|authorlink = Om Malik|date = July 15, 2006|accessdate = January 22, 2014|publisher = [[GigaOm]]}}</ref> This appears to be the first ever news coverage of Twitter,<ref>{{cite web|url=http://techcrunch.com/2013/08/13/congrats-om/|title = Om Malik, Father Of Tech News Blogging, American Citizen|last = Tsotsis|first = Alexia|date = August 13, 2013|accessdate = January 22, 2014|publisher = ''[[TechCrunch]]''}}</ref> and a number of people, including Malik himself, have commented on the accuracy (or lack thereof) of its predictions from the perspective of hindsight.<ref>{{Cite web|url=http://www.slate.com/blogs/future_tense/2013/11/05/om_malik_s_first_blog_post_about_twitter_in_2006_got_everything_wrong.html|title = The First Blog Post About Twitter Got Pretty Much Everything Wrong|last = Oremus|first = Will|date = November 5, 2013|accessdate = January 22, 2014|publisher = ''[[Slate Magazine]]''}}</ref><ref>{{Cite web|url=http://gigaom.com/2013/11/04/to-live-and-die-in-public-thats-twitter/|title = To live and die in public: That’s Twitter|last = Malik|first = Om|authorlink = Om Malik|date = November 4, 2013|accessdate = January 22, 2014|publisher = [[GigaOm]]}}</ref><ref>{{cite web|url=http://clairediazortiz.com/5-lessons-on-twitter/|title = 5 Lessons on Twitter from the First Article Ever Written About It|last = Diaz-Oritz|first = Claire|accessdate = January 22, 2014}}</ref>

| 2006 || August 3 || Usage || Twitter users tweet about a mild (4.4 on the [[Richter scale]]) earthquake in [[California]]. The event helps Twitter's team see the potential of Twitter as a way for many people to contribute to the reporting of a live event, each from his or her own vantage point.<ref>{{cite web|url=https://blog.twitter.com/2006/have-your-quake-and-twitter-it-too|title = Have Your Quake And Twitter It Too|last = Stone|first = Biz|authorlink = Biz Stone|date = August 3, 2006|accessdate = January 23, 2014|publisher = ''Twitter'' blog}}</ref>

| 2006 || September || Userbase || Twitter attempts to have a grand launch at the [[Love Parade]], but gets very little traction there, with only 100 new signups.<ref>{{cite book|title = ''Hatching Twitter''|last = Bilton|first = Nick}}, Chapter III, Section ''A Bloody Mess''</ref>

| 2006 || October || Financial/legal and company operation || [[Biz Stone]], [[Evan Williams (Internet entrepreneur)|Evan Williams]], Dorsey, and other members of Odeo, form Obvious Corporation and acquired Odeo, together with its assets—including Odeo.com and Twitter.com—from the investors and shareholders.<ref name='Odeo RIP'>{{Cite news| first=Om | last=Malik | coauthors= |authorlink= | title=Odeo RIP, Hello Obvious Corp | date=October 25, 2006 |url=http://gigaom.com/2006/10/25/odeo-rip-hello-obvious-corp/ |work=[[GigaOM]] |accessdate=June 20, 2009}}</ref>

| 2007 || March 12 || Userbase || Twitter is highly successful at [[South by Southwest Interactive]] (SXSW) and gets a major bump in usage from the event.<ref>{{cite web|url=http://gawker.com/tech/next-big-thing/twitter-blows-up-at-sxsw-conference-243634.php |title=Twitter Blows Up at SXSW Conference |last=Douglas |first=Nick |date=March 12, 2007 |work=[[Gawker]] |accessdate=February 21, 2011}}</ref> Commentator [[Steven Levy]] calls this a tipping point for Twitter.<ref name='Newsweek Tipping Point'>{{Cite news|author=Levy, Steven|title=Twitter: Is Brevity The Next Big Thing? |date=April 30, 2007 |url=http://www.newsweek.com/id/35289 |work=[[Newsweek]] |accessdate=February 4, 2011 |authorlink=Steven Levy}}</ref>

| 2007 || April || Financial/legal and company operation || Twitter spins off into its own company.<ref name='Dorsey Interview'>{{cite web|url=http://www.thedailyanchor.com/2009/02/12/a-conversation-with-twitter-co-founder-jack-dorsey/ |title=A Conversation with Twitter Co-Founder Jack Dorsey |accessdate=February 12, 2009 |last=Lennon |first=Andrew |work=[[The Daily Anchor]] }}</ref>

| 2007 || June 26 || Financial/legal || Twitter announces that it has closed a funding round led by [[Fred Wilson (financier)|Fred Wilson]] of [[Union Square Ventures]].<ref>{{cite web|url=https://blog.twitter.com/2007/taking-bite-out-big-apple|title = Taking a bite out of the big apple|last = Dorsey|first = Jack|date = June 26, 2007|accessdate = January 23, 2014|publisher = ''Twitter' blog}}</ref> The five-million-dollar round values Twitter at $20 million.<ref>{{cite book|title = ''Hatching Twitter''|last = Bilton|first = Nick}}, Page 114</ref>

| 2008 || June 24 || Financial/legal || Twitter announces the closure of its second funding round, welcoming new investors [[Bijan Sabet]] of [[Spark Capital]] and [[Jeff Bezos]] of [[Bezos Expeditions]]. Existing partners [[Union Square Ventures]] and [[Digital Garage]] also invest more.<ref>{{cite web|url=https://blog.twitter.com/2008/welcoming-bijan-and-jeff|title = Welcoming Bijan and Jeff|date = June 24, 2008|accessdate = January 24, 2014|publisher = ''Twitter'' blog|last = Stone|first = Biz|authorlink = Biz Stone}}</ref>

| 2008 || October 16 || Company operation || It is announced that [[Jack Dorsey]] has stepped down from the CEO role at Twitter, and [[Evan Williams (Internet entrepreneur)|Evan Williams]] takes over.<ref>{{cite web|url=http://techcrunch.com/2008/10/16/ceo-change-at-twitter-ev-williams-back-at-the-helm/|title = CEO Change At Twitter: Ev Williams Back At The Helm|last = Arrington|first = Michael|authorlink = Michael Arrington|date = October 16, 2008|accessdate = January 23, 2014|publisher = ''[[TechCrunch]]''}}</ref><ref>{{cite web|url=http://venturebeat.com/2008/10/16/a-swap-atop-twitter-for-the-new-phase/|title = A swap atop Twitter for the "new phase"|last = Siegler|first = MG|authorlink = MG Siegler|date = October 16, 2008|accessdate = January 23, 2014|publisher = ''[[VentureBeat]]''}}</ref><ref>{{cite web|url=http://news.cnet.com/8301-13577_3-10068368-36.html|title = Twitter CEO Jack Dorsey steps down. He's switching places with fellow co-founder Evan Williams, who will become CEO as Dorsey takes over the position of chairman of the board.|last = McCarthy|first = Caroline|date = October 16, 2008|accessdate = January 23, 2014|publisher = ''[[CNet]]''}}</ref><ref>{{cite web|url=http://bits.blogs.nytimes.com/2008/10/16/ttwitter-sidelines-one-founder-and-promotes-another/?_php=true&_type=blogs&_r=0|title = Twitter Sidelines One Founder and Promotes Another|last = Cain Miller|first = Claire|last2 = Goel|first2 = Vinod|date = October 16, 2008|accessdate = January 23, 2014|publisher = ''[[New York Times]]'' ''Bits'' blog}}</ref>

| 2009 || February 13 || Financial/legal || Twitter announces the closure of yet another funding round, with new investors [[Peter Fenton (venture capitalist)|Peter Fenton]] of [[Benchmark Capital]] and [[Todd Chaffee]] of [[Institutional Venture Partners]].<ref>{{cite web|url=https://blog.twitter.com/2009/opportunity-knocks|title = Opportunity Knocks|date = February 13, 2009|accessdate = January 24, 2014|publisher = ''Twitter'' blog|last = Stone|first = Biz|authorlink = Biz Stone}}</ref><ref>{{cite web|url=http://techcrunch.com/2009/02/13/twitter-raises-third-round-of-funding-from-benchmark-and-ivp/|title = Twitter Raises $35 Million Series C From Benchmark and IVP|last = Hendrickson|first = Mark|date = February 13, 2009|accessdate = January 24, 2014|publisher = ''[[TechCrunch]]''}}</ref>

| 2009 || April 17 || Media coverage, userbase expansion || Evan Williams appears alongside [[Ashton Kutcher]] on [[Oprah Winfrey]]'s show to explain Twitter to Oprah's audience.<ref>{{cite web|url=http://mashable.com/2009/04/17/twitter-oprah/|title = Ashton Kutcher and Evan Williams Talk Twitter With Oprah [Video]|last = Ostrow|first = Adam|date = April 17, 2009|accessdate = January 23, 2014}}</ref>

| 2009 || April 20 onward || Media coverage, userbase expansion || Executives from Twitter and [[WordPress]] head over to [[Iraq]] to expose the people there to social media and the [[Internet]].<ref>{{cite web|url=http://www.cnn.com/2009/TECH/04/21/iraq.twitter.technology/index.html?eref=rss_latest%22|title = Twitter, WordPress execs in Iraq to help country use new media|date = April 22, 2009|accessdate = January 23, 2014}}</ref>

| 2009 || April 30 || Media coverage || Twitter executives [[Biz Stone]] and [[Evan Williams (Internet entrepreneur)|Evan Williams]] are included in the TIME 100.<ref>{{cite web|url=http://content.time.com/time/specials/packages/article/0,28804,1894410_1893837_1894156,00.html|title = The Twitter Guys|last = Kutcher|first = Ashton|date = April 30, 2009|accessdate = January 23, 2014|publisher = [[Time Magazine]]}}</ref>

| 2009 || June 15–16 || Usage || Twitter reschedules planned downtime for maintenance so as not to conflict with a large planned protest in Iran.<ref>{{cite web|url=https://blog.twitter.com/2009/down-time-rescheduled|title = Down Time Rescheduled|last = Stone|first = Biz|authorlink = Biz Stone|date = June 15, 2009|accessdate = January 23, 2014|publisher = ''Twitter'' blog}}</ref> Because a US State Department official had emailed Twitter about the planned protest, newspapers speculate that Twitter rescheduled its downtime because of pressure from the US government.<ref>{{cite web|url=http://mashable.com/2009/06/16/twitter-iran/|title = U.S. Government Asks Twitter to Stay Up for #IranElection Crisis|last = Parr|first = Ben|date = June 16, 2009|accessdate = January 23, 2014|publisher = ''[[Mashable]]''}}</ref><ref>{{cite web|url=http://www.washingtontimes.com/news/2009/jun/16/irans-twitter-revolution/|title = EDITORIAL: Iran’s Twitter revolution|publisher = ''[[Washington Post]]''|date = June 16, 2009|accessdate = January 23, 2014}}</ref><ref>{{cite web|url=http://content.time.com/time/world/article/0,8599,1905125,00.html|title = Iran Protests: Twitter, the Medium of the Movement|last = Grossman|first = Lev|date = June 17, 2009|accessdate = January 23, 2014|publisher = ''[[Time Magazine]]''}}</ref>

| 2010 || January 22 || Usage || The first unassisted off-Earth Twitter message is posted from the [[International Space Station]] by [[NASA]] [[astronaut]] [[Timothy Creamer|T. J. Creamer]].<ref>[[Press release]] (January 22, 2010). [http://www.nasa.gov/home/hqnews/2010/jan/HQ_M10-011_Hawaii221169.html "Media Advisory M10-012 – NASA Extends the World Wide Web Out into Space"]. [[NASA]]. Retrieved February 5, 2011.</ref>  

| 2010 || April 13 || Product || Twitter announces that it will start allowing for advertising in the form of ''promoted tweets'' – "ordinary tweets that businesses and individuals want to highlight to a wider group of users."<ref>{{cite web|url=https://blog.twitter.com/2010/hello-world|title = Hello World|date = April 13, 2010|accessdate = January 23, 2014|publisher = ''Twitter'' blog|last = Stone|first = Biz|authorlink = Biz Stone}}</ref><ref>{{cite web|url=http://online.wsj.com/news/articles/SB10001424052702303695604575181163126094200|title = Twitter to Start Rolling Out Advertising|last = Vascellaro|first = Jessica|date = April 13, 2010|accessdate = January 23, 2014|publisher = ''[[Wall Street Journal]]''}}</ref><ref>{{cite web|url=https://www.nytimes.com/2010/04/13/technology/internet/13twitter.html|title = Twitter Unveils Plans to Draw Money From Ads|last = Cain Miller|first = Claire|date = April 13, 2010|accessdate = January 23, 2014|publisher = ''[[New York Times]]''}}</ref>

| 2010 || October 4 || Company operation || [[Evan Williams (Internet entrepreneur)|Evan Williams]] steps down as CEO, and [[Dick Costolo]], the erstwhile COO, takes over as CEO.<ref>{{cite web|url=https://blog.twitter.com/2010/newtwitterceo|title = #newtwitterceo|last = Williams|first = Evan|date = October 4, 2010|accessdate = January 23, 2014|publisher = ''Twitter'' blog}}</ref><ref>{{cite web|url=http://techcrunch.com/2010/10/04/twitter-ceo-dick-costolo/|title = Dick Costolo Takes Twitter CEO Role So Evan Williams Can Focus On Product|last = Siegler|first = MG|authorlink = MG Siegler|date = October 4, 2010|accessdate = January 23, 2014|publisher = ''[[TechCrunch]]''}}</ref><ref>{{cite web|url=http://techcrunch.com/2010/10/04/twitter-ceo-change/|title = Evan Williams And Dick Costolo: New Twitter Triggered CEO Change|last = Siegler|first = MG|authorlink = MG Siegler|date = October 4, 2010|accessdate = January 23, 2014}}</ref>

| 2011 || July 5 || Acquisition || Twitter acquires BackType, a real-time social analytics platform.<ref>{{cite web|url=http://techcrunch.com/2011/07/05/twitter-acquires-social-analytics-startup-backtype/|title = Twitter Acquires Social Analytics Platform BackType|last = Rao|first = Leena|date = July 5, 2011|accessdate = August 1, 2014|publisher = ''[[TechCrunch]]''}}</ref><ref>{{cite web|url=http://venturebeat.com/2011/07/05/twitter-buys-backtype/|title = Twitter acquires BackType for improved analytics|last = Cheredar|first = Tom|date = July 5, 2011|accessdate = August 1, 2014|publisher = ''[[VentureBeat]]''}}</ref>

| 2011 || September 8–9 || Financial/legal || Twitter closes its Series G round, raising $800 million at a $8 billion valuation. Of the $800 million, $400 million buys off shares from existing investors and the remaining $400 million goes to the company.<ref>{{cite web|url=http://techcrunch.com/2011/09/08/twitter-closing-its-400m-secondary-offering-tomorrow/|title = Twitter Closing Its $400M Secondary Offering Tomorrow|last = Tsotsis|first = Alexia|date = September 8, 2011|accessdate = January 24, 2014|publisher = ''[[TechCrunch]]''}}</ref><ref>{{cite web|url=http://www.searchenginejournal.com/twitter-set-to-close-400-million-in-series-g-funding-on-8-billion-valuation/33268/|title = Twitter Set to Close $400 Million in Series G Funding on $8 Billion Valuation|last = Angotti|first = David|date = September 9, 2011|accessdate = January 24, 2014|publisher = ''[[Search Engine Journal]]''}}</ref>

| 2011 || December 8 || Product || Twitter overhauls its website once more to feature the "Fly" design, which the service says is easier for new users to follow and promotes advertising. In addition to the ''Home'' tab, the ''Connect'' and ''Discover'' tabs are introduced along with a redesigned profile and timeline of Tweets. The site's layout is compared to that of [[Facebook]].<ref>{{cite web|url=http://fly.twitter.com/ |title=Twitter: Yours to discover |publisher=Fly.twitter.com |date= |accessdate=2012-01-20}}</ref><ref>{{cite news|author=Twitter / YouTube |url=http://www.foxnews.com/scitech/2011/12/09/what-need-to-know-about-new-twitter/?test=faces |title=Twitter 2.0: Everything You Need To Know About The New Changes |publisher=Fox News |date=2010-04-07 |accessdate=2012-01-20}}</ref>

| 2012 || February 21 || Product || Twitter announces a parternship with Russian search engine [[Yandex]]. Yandex, a Russian search engine, finds value within the partnership due to Twitter’s real time news feeds. Twitter’s director of business development explained that it is important to have Twitter content where Twitter users go.<ref>Prodhan Georgina February 21, 2012. “Twitter partners with Yandex for real-time search.” http://www.reuters.com/article/2012/02/21/twitter-yandex-idUSL5E8DK89H20120221</ref>

| 2012 || April || Company operation || Twitter announces that it is opening an office in [[Detroit]], with the aim of working with automotive brands and advertising agencies.<ref>{{cite news|url=http://www.reuters.com/article/2012/04/04/twitter-detroit-idUSL2E8F47G020120404 |title=Twitter heads to Motown to be closer to automakers |publisher=Reuters |date=2012-04-04 |accessdate=2012-04-05}}</ref> Twitter also expanded its office in [[Dublin]].<ref>{{cite news|url=http://www.independent.ie/business/technology/twitter-to-create-12-jobs-as-it-scales-up-irish-operations-3070098.html|title=Twitter to create 12 jobs as it scales up Irish operations |publisher=Irish Independent |date=2012-04-04 |accessdate=2012-04-05}}</ref>

| 2012 || October 5 || Acquisition || Twitter acquired a video clip company called [[Vine (app)|Vine]] that launches (later) in January 2013.<ref>{{cite news|url=https://www.mediabistro.com/alltwitter/twitter-acquires-video-service_b29668|title=Twitter Acquires Video Service; Are Third Party Video Developers In Danger Now Too?|publisher=MediaBistro|date=October 9, 2012|accessdate=October 10, 2012}}</ref><ref>{{cite news|url=http://allthingsd.com/20121009/twitter-buys-vine-a-video-clip-company-that-never-launched/|title=Twitter Buys Vine, a Video Clip Company That Never Launched|publisher=All Things D|date=October 9, 2012|accessdate=October 10, 2012}}</ref> Twitter released Vine as a standalone app that allows users to create and share six-second looping video clips on January 24, 2013.  Vine videos shared on Twitter are visible directly in users' Twitter feeds.<ref>{{cite news|first=Stuart|last=Dredge|title=Vine iPhone app brings short, sharp video to Twitter|work=[[The Guardian]]|url=https://www.theguardian.com/technology/appsblog/2013/jan/24/twitter-vine-iphone-app|date=January 23, 2013|accessdate=January 26, 2013}}</ref> Due to an influx of inappropriate content, it is now rated 17+ in Apple's app store.<ref>{{cite web|title=Twitter's Vine Changes App Store Rating to +17, Adds Social Sharing Features|url=http://abcnews.go.com/Technology/twitters-vine-app-store-rating-17-adds-social/story?id=18420254|publisher=ABC News}}</ref>

| 2013 || April 18 || Product || Twitter launches a music app called Twitter Music for the iPhone.<ref>{{cite web|last=Ulanoff|first=Lance|title=Twitter Launches Twitter #music App and Service|url=http://mashable.com/2013/04/18/twitter-music-launch-2/|publisher=Mashable|accessdate=28 April 2013|work=[[Mashable]]}}</ref>

| 2013 || September 12 || Financial/legal || Twitter announces that it has filed papers with the [[U.S. Securities and Exchange Commission]] ahead of a planned [[Initial public offering|stock market listing]].<ref>{{cite news|publisher=BBC News|url=http://www.bbc.co.uk/news/business-24075010|title=Twitter plans stock market listing|date=September 12, 2013|accessdate=September 13, 2013}}</ref>

| 2013 || November 6–7 || Financial/legal || On November 6, 70 million shares<ref>{{cite web|title=Interesting Numbers From Twitter's IPO|url=http://abcnews.go.com/Technology/wireStory/interesting-numbers-twitters-ipo-20824494|date=November 8, 2013|publisher=[[ABC News]]|accessdate=November 8, 2013}}</ref> are priced at US$26 and issued by lead underwriter [[Goldman Sachs]].<ref>{{cite web|title=Twitter prices IPO at $26 per share|url=https://finance.yahoo.com/news/twitter-raises--xx-billion-in-ipo-190114410.html|date=November 6, 2013|publisher=[[Yahoo! Finance]]|accessdate=November 8, 2013}}</ref> On November 7, trading of the shares begins on the [[New York Stock Exchange]]. The share closes at US$44.90, giving the company a valuation of around US$31 billion.<ref>{{cite news|title=Twitter shares jump 73% in market debut|url=http://www.bbc.co.uk/news/business-24851054|date=November 7, 2013|publisher=[[BBC News]]|accessdate=November 8, 2013}}</ref>

| 2014 || June 30 || Acquisition || Twitter confirms acquisition of mobile ad retargeting startup TapCommerce.<ref>{{cite web|url=http://recode.net/2014/06/30/twitter-scoops-up-adtech-firm-tap-commerce-for-around-100-million/|title = Twitter Scoops Up AdTech Firm Tap Commerce for Around $100 Million|last = Fried|first = Ina|date = June 30, 2014|accessdate = September 3, 2014|publisher = [[Re/code]]}}</ref>

| 2014 || July 31 || Acquisition || Twitter acquires password security startup Mitro and open sources the product.<ref>{{cite web|url = http://techcrunch.com/2014/07/31/twitter-mitro/|title = Twitter Acquires Password Security Startup Mitro, Open Sources Its Product|author = Cutler|first = Kim-Mai|publisher = ''[[TechCrunch]]''}}</ref>

| 2014 || November 12 || Product, userbase || Twitter announces "Instant Timeline"—a way to show users who have just created accounts interesting content even before they have followed anybody. Around the same time, Twitter announces that it will make the timeline more customized, highlighting to a user the most important tweets while they were away, rather than simply showing a reverse chronological feed. Other features announced include better video capability and the ability to share public tweets privately with one's followers to discuss them.<ref>{{cite web|url=http://techcrunch.com/2014/11/12/twitter-instant-timeline/|title = Twitter Will Onboard Users With "Instant Timeline", Inject Top Tweets From "While You Were Away"|date = November 12, 2014|accessdate = December 11, 2014|publisher = ''[[TechCrunch]]''}}</ref>

| 2014 || December 2 || Product || Twitter announces a new suite of anti-harassment tools and promises faster response times for abuse complaints.<ref>{{cite web|url=http://techcrunch.com/2014/12/02/twitter-releases-new-suite-of-anti-harassment-tools-promises-faster-response-times/|title = Twitter Releases New Suite Of Anti-Harassment Tools, Promises Faster Response Times For Dealing With Abuse|last = Perez|first = Sarah|date = December 2, 2014|accessdate = December 11, 2014|publisher = ''[[TechCrunch]]''}}</ref>

| 2015 || January 20 || Acquisition || Twitter acquires India-based mobile marketing startup ZipDial.<ref>{{cite web|url=http://dealbook.nytimes.com/2015/01/20/twitter-acquires-indian-start-up/?_r=0|title = Twitter Acquires ZipDial, an Indian Start-Up|author = Michael J. De La Merced|date = January 20, 2015|accessdate = January 25, 2015|publisher = ''[[New York Times]]'' (Dealbook blog)}}</ref><ref>{{cite web|url=http://techcrunch.com/2015/01/20/emerging-market-innovation/|title = Twitter’s Acquisition Of ZipDial Proves There’s Tech Innovation In Emerging Markets|last = Russell|first = Jon|date = January 20, 2015|accessdate = January 25, 2015|publisher = ''[[TechCrunch]]''}}</ref>

| 2015 || January 21 || Product || Twitter officially launches its "While You Were Away" feature.<ref>{{cite web|url=http://techcrunch.com/2015/01/21/twitter-launches-while-you-were-away/|title = Twitter Officially Launches Its "While You Were Away" Recap Feature|last = Ha|first = Anthony|date = January 21, 2015|accessdate = January 25, 2015|publisher = ''[[TechCrunch]]''}}</ref>

| 2015 || February 11 || Acquisition || Twitter announces that it has acquired Niche, an ad network for social media stars, founded by [[Rob Fishman]] and Darren Lachtman.<ref>{{Cite web|url=http://social.techcrunch.com/2015/02/11/twitter-acquires-niche-a-startup-that-helps-advertisers-work-with-social-media-celebrities/|title=Twitter Acquires Niche, A Startup That Helps Advertisers Work With Social Media Celebrities|last=Ha|first=Anthony|website=TechCrunch|access-date=April 10, 2016}}</ref> The acquisition price is reportedly $50 million.<ref>{{Cite web|url=http://www.businessinsider.com/twitter-buys-niche-an-ad-network-for-vine-stars-2015-2|title=Twitter buys Niche, an ad network for Vine stars, for about $50 million in cash and stock|website=Business Insider|access-date=April 10, 2016}}</ref>

| 2015 || February 17 || Product || Twitter lets people share team accounts without sharing passwords, with its new TweetDeck Team feature.<ref>{{cite web|url=https://blog.twitter.com/2015/introducing-tweetdeck-teams|title = Introducing TweetDeck Teams|last = Zima|first = Amy|date = February 17, 2015|accessdate = April 5, 2015|publisher = [[Twitter]]}}</ref><ref>{{cite web|url=http://techcrunch.com/2015/02/17/share-twitter-account/|title = Twitter Finally Lets You Share Team Accounts Without Sharing Passwords|date = February 17, 2015|accessdate = April 5, 2015|publisher = ''[[TechCrunch]]''|last = Ha|first = Anthony}}</ref><ref>{{cite web|url=http://www.geekwire.com/2015/twitter-allows-password-free-account-sharing-with-new-tweetdeck-teams-feature/|title = Twitter allows password-free account sharing with new TweetDeck Teams feature|author = Blair Hanley Frank|date = February 17, 2015|accessdate = April 5, 2015|publisher = ''[[GeekWire]]''}}</ref>

| 2015 || March 5 || Product, monetization || Twitter announces that it will tap data from its Marketing Platform Partners and allow publishers to target ads to specific audiences based on that data.<ref>{{cite web|url=https://blog.twitter.com/2015/introducing-partner-audiences|title = Introducing partner audiences|last = Boston|first = Kyle|date = March 5, 2015|accessdate = April 5, 2015|publisher = [[Twitter]]}}</ref><ref>{{cite web|url=http://techcrunch.com/2015/03/05/twitter-partner-audiences/|title = Twitter Taps Partner Data To Help Marketers Target Their Ads|last = Ha|first = Anthony|date = March 5, 2015|accessdate = April 5, 2015|publisher = ''[[TechCrunch]]''}}</ref>

| 2015 || March 9 || Acquisition || Twitter acquires Periscope, a live video streaming startup.<ref>{{cite web|url=http://www.wsj.com/articles/twitter-acquires-live-video-streaming-startup-periscope-1425938498|title = Twitter Acquires Live-Video Streaming Startup Periscope. Social-media firm pays slightly less than $100 million for developer whose application is in beta testing|last = Koh|first = Yoree|last2 = Rusli|first2 = Evelyn|date = March 9, 2015|accessdate = May 8, 2015|publisher = ''[[Wall Street Journal]]''}}</ref><ref>{{cite web|url=http://www.businessinsider.com/twitter-acquires-periscope-for-a-sizable-amount-2015-3|title = Twitter quietly bought a video startup that hasn't launched yet, Periscope|last = Shontell|first = Alyson|date = March 9, 2015|accessdate = May 8, 2015|publisher = ''[[Business Insider]]''}}</ref>

| 2015 || March 23 || Product || Twitter starts rolling out a "Quality Filter" to verified iOS users so that people can more easily keep bullying and unpleasant tweets out of their stream. A number of news articles commented that it worked quite well.<ref>{{cite web|url=http://techcrunch.com/2015/03/23/twitter-quality-filter/|title = Twitter’s New "Quality Filter" Starts Rolling Out To Verified iOS Users|last = Shu|first = Catherine|date = March 23, 2015|accessdate = April 5, 2015|publisher = ''[[TechCrunch]]''}}</ref><ref>{{cite web|url=http://mashable.com/2015/03/24/twitter-content-filter/|title = Twitter takes the fight to abusers with new quality filter|last = Pachal|first = Peter|date = March 24, 2015|accessdate = April 5, 2015|publisher = ''[[Mashable]]''}}</ref><ref>{{cite web|url=http://www.washingtonpost.com/news/the-intersect/wp/2015/03/31/this-is-how-twitters-new-anti-harassment-filter-works-surprise-it-works-really-well/|title = This is how Twitter’s new anti-harassment filter works. (Surprise! It works really well.)|last = Dewey|first = Caitlin|date = March 31, 2015|accessdate = April 5, 2015|publisher = ''[[Washington Post]]''}}</ref><ref>{{cite web|url=http://time.com/3756861/twitter-quality-filter/|title = Twitter Rolls Out ‘Quality Filter’ to Combat Abuse|last = Luckerson|first = Victor|date = March 24, 2015|accessdate = April 5, 2015|publisher = ''[[TechCrunch]]''}}</ref>

| 2015 || March 31 || Product || Twitter publicly launches Curator, a real-time search and filtering feature for media outlets, that some commentators call a [[Storify]] competitor.<ref>{{cite web|url=https://blog.twitter.com/2015/introducing-curator-a-new-way-to-find-and-display-great-twitter-content|title = Introducing Curator, a new way to find and display great Twitter content|date = March 31, 2015|accessdate = April 5, 2015|publisher = [[Twitter]]|last = Dennebaum|first = Matt}}</ref><ref>{{cite web|url = http://techcrunch.com/2015/03/31/twitter-curator/|title = Twitter Publicly Launches Curator, Its Real-Time Search And Filtering Tool For Media Outlets|last = Perez|first = Sarah|date = March 31, 2015|accessdate = April 5, 2015|publisher = ''[[TechCrunch]]''}}</ref><ref>{{cite web|url=http://mashable.com/2015/03/31/twitters-curator-launch/|title = Twitter launches Curator, its free Storify competitor|last = Bell|first = Karissa|date = March 31, 2015|accessdate = April 5, 2015|publisher = ''[[Mashable]]''}}</ref>

Confirmed: Twitter Buys TenXer For Under $50M To Improve Its Tools For Engineers|last = Lunden|first = Ingrid|date = April 2, 2015|accessdate = May 8, 2015|publisher = ''[[TechCrunch]]''}}</ref>

| 2015 || April 28 || Acquisition || Twitter acquires with $532 million in stock TellApart, an ad technology company with rich user profiles, and partners with [[DoubleClick]], Google's ad exchange.<ref>{{cite web|url=https://blog.twitter.com/2015/welcoming-tellapart-to-the-flock|title = Welcoming TellApart to the flock|last = Well|first = Kevin|date = April 28, 2015|accessdate = May 8, 2015|publisher = [[Twitter]]}}</ref><ref>{{cite web|url=http://venturebeat.com/2015/04/28/twitter-acquires-ad-technology-company-tellapart-and-partners-with-googles-doubleclick/|title = Twitter acquires ad technology company TellApart and partners with Google’s DoubleClick|last = Protalinksi|first = Emil|date = April 28, 2015|accessdate = May 8, 2015|publisher = ''[[VentureBeat]]''}}</ref><ref>{{cite web|url=http://adage.com/article/digital/twitter-acquires-tellapart-a-retail-retargeter/298300/|title = Twitter Acquires TellApart, a Retail Retargeter That Could Supercharge Its 'Buy' Button|last = Kantrowitz|first = Alex|date = April 28, 2015|accessdate = May 8, 2015|publisher = [[AdAge]]}}</ref>

| 2015 || April 28 || Financial || Twitter shares fall in price by about 18% based on their disappointing quarterly revenue ($436 million), earning, and user growth numbers.<ref>{{cite web|url=http://techcrunch.com/2015/04/28/twitter-collapses-18-in-wake-of-lackluster-q1-revenue-user-growth/|title = Twitter Collapses 18% In Wake Of Lackluster Q1 Revenue, User Growth|last = Wilhelm|first = Alex|date = April 28, 2015|accessdate = June 6, 2015|publisher = ''[[TechCrunch]]''}}</ref><ref>{{cite web|url=http://venturebeat.com/2015/04/28/twitter-misses-expectations-with-436m-in-revenue-but-beats-estimates-with-7-cents-eps/|title = Twitter shares plunge on Q1 revenue of $436M that missed expectations|last = Terdiman|first = Daniel|date = April 28, 2015|accessdate = June 6, 2015|publisher = ''[[VentureBeat]]''}}</ref><ref>{{cite web|url=http://www.usatoday.com/story/tech/2015/04/28/twitter-earnings-first-quarter/26518249/|title = Twitter shares plunge on revenue miss|last = Guynn|first = Jessica|date = April 29, 2015|accessdate = June 6, 2015|publisher = ''[[USA Today]]''}}</ref> The drop begins even before Twitter's official announcement because the results are scraped by financial intelligence firm Selerity from Twitter's website.<ref>{{cite web|url=http://techcrunch.com/2015/04/28/oops/|title = Falling TWTR Temporarily Halted After Results Published Early — On Twitter|last = Ha|first = Anthony|date = April 28, 2015|accessdate = June 6, 2015|publisher = ''[[TechCrunch]]''}}</ref><ref>{{cite web|url=http://www.fool.com/investing/general/2015/04/30/dont-blame-selerity-for-twitter-incs-plunge.aspx|title = Don't Blame Selerity for Twitter Inc.'s Plunge|last = Duprey|first = Rich|date = April 30, 2015|accessdate = June 6, 2015|publisher = [[Motley Fool]]}}</ref>

| 2015 || May 18 || Product || Twitter completes the rollout of its new search interface for logged-in web users.<ref>{{cite web|url=http://techcrunch.com/2015/05/18/twitters-new-search-results-interface-expands-to-all-web-users/|title = Twitter’s New Search Results Interface Expands To All Web Users|last = Perez|first = Sarah|date = May 18, 2015|accessdate = June 6, 2015|publisher = ''[[TechCrunch]]''}}</ref><ref>{{cite web|url=http://thenextweb.com/twitter/2015/05/19/twitter-rolls-out-new-search-results-interface-on-its-site/|title = Twitter rolls out new search results interface on its site|last = Ghoshal|first = Abhimanyu|date = May 19, 2015|accessdate = June 6, 2015|publisher = ''The Next Web''}}</ref>

| 2015 || May 19 || Use in other products || [[Google]] adds tweets to its mobile [[Google Search|search results]].<ref>{{cite web|url=http://googleblog.blogspot.com/2015/05/tweets-take-flight-in-google-app.html|title = Tweets take flight in the Google app|date = May 19, 2015|accessdate = June 6, 2015|publisher = Official Google Blog}}</ref><ref>{{cite web|url=http://techcrunch.com/2015/05/19/google-adds-tweets-to-its-mobile-search-results/|title = Google Adds Tweets To Its Mobile Search Results|date = May 19, 2015|accessdate = June 6, 2015|publisher = ''[[TechCrunch]]''}}</ref><ref>{{cite web|url=http://thenextweb.com/insider/2015/05/19/google-adds-twitter-to-mobile-search-results/|title = Google adds rich Twitter cards to mobile search results|last = Swanner|first = Nate|date = May 19, 2015|accessdate = June 6, 2015|publisher = ''The Next Web''}}</ref><ref>{{cite web|url = http://variety.com/2015/digital/news/google-makes-peace-with-twitter-adds-tweets-to-mobile-search-1201500757/|title = Google Makes Peace With Twitter, Adds Tweets to Mobile Search|date = May 19, 2015|accessdate = June 6, 2015|publisher = ''[[Variety (magazine)|Variety]]''}}</ref>

| 2015 || June 11 (announcement), July 1 (planned change) || Company operation || [[Dick Costolo]] steps down as CEO, co-founder [[Jack Dorsey]] returns as interim CEO. Costolo will remain on the Board. Shares are up 3% on the announcement.<ref>{{cite web|url=http://techcrunch.com/2015/06/11/twitter-announces-ceo-dick-costolo-stepping-down-jack-dorsey-named-interim-ceo/|title = Twitter’s CEO Dick Costolo Chooses To Step Down, Jack Dorsey Named Interim CEO, Shares Up 3%|date = June 11, 2015|accessdate = June 11, 2015|publisher = ''[[TechCrunch]]''}}</ref><ref>{{cite web|url=https://www.nytimes.com/2015/06/12/technology/dick-costolo-twitter-ceo-jack-dorsey.html|title = Twitter’s C.E.O., Dick Costolo, Is Set to Exit, Feeling Heat of Criticism|last = Goel|first = Vindu|last2 = Isaac|first2 = Mike|date = June 11, 2015|accessdate = June 11, 2015|publisher = ''[[New York Times]]''}}</ref><ref>{{cite web|url=http://www.wsj.com/articles/twitter-ceo-costolo-stepping-down-1434053738|title = Twitter CEO Dick Costolo Stepping Down. Chairman Jack Dorsey to be interim CEO|last = Koh|first = Yoree|date = June 11, 2015|accessdate = June 11, 2015|publisher = ''[[Wall Street Journal]]''}}</ref>

|last = Sara|first = Perez|date = June 17, 2015|accessdate = June 17, 2015|publisher = ''[[TechCrunch]]''}}</ref>

| 2015 || September 30 || Product || Twitter expands Buy buttons through partnerships with [[Bigcommerce]], [[Demandware]], and [[Shopify]].<ref>{{cite web|url = https://blog.twitter.com/2015/more-ways-to-sell-directly-on-twitter|title = More ways to sell directly on Twitter|date = September 30, 2015|accessdate = October 18, 2015|last = Hubbard|first = Nathan|publisher = [[Twitter]]}}</ref><ref>{{cite web|url = http://techcrunch.com/2015/09/30/twitter-buy-more-now/|title = Twitter Expands ‘Buy’ Buttons To Bigcommerce, Demandware, Shopify… And Best Buy|last = Lunden|first = Ingrid|date = September 30, 2015|accessdate = October 18, 2015|publisher = ''[[TechCrunch]]''}}</ref>

| 2015 || October 6 || Product || Twitter debuts Twitter Moments, a way for people to get a quick overview of important tweets or chains of tweets that occurred recently.<ref>{{cite web|url = http://techcrunch.com/2015/10/06/project-glacier/|title = Twitter Debuts Moments|last = Olanoff|first = Drew|date = October 6, 2015|accessdate = October 18, 2015|publisher = ''[[TechCrunch]]''}}</ref><ref>{{cite web|url = http://mashable.com/2015/07/05/twitter-project-lightning-moments/|title = Twitter's Project Lightning could be called 'Moments'|date = July 5, 2015|accessdate = October 18, 2015|last = Warren|first = Christina|publisher = ''[[Mashable]]''}}</ref>

| 2015 || October 14 || Company operation || [[Omid Kordestani]] leaves his job as Chief Business Officer at [[Google]] to become Executive Chairman at Twitter.<ref>{{cite web|url = http://techcrunch.com/2015/10/14/twitter-names-googles-omid-kordestani-as-its-new-executive-chairman/|title = Omid Kordestani Leaves Google, Joins Twitter As Its Executive Chairman|date = October 14, 2015|accessdate = October 18, 2015|publisher = ''[[TechCrunch]]''|last = Lunden|first = Ingrid}}</ref> His base salary is $50,000 and he is eligible for up to $12 million in stock based on the company's performance.<ref>{{cite web|url=http://venturebeat.com/2015/10/16/heres-how-much-twitter-offered-its-new-executive-chairman-omid-kordestani-to-join-the-company/|title = Here’s how much Twitter offered new chairman Omid Kordestani to join the company|last = Reader|first = Ruth|date = October 16, 2015|accessdate = October 18, 2015}}</ref><ref>{{cite web|url = http://www.newsweek.com/meet-omid-kordestani-twitter-new-executive-chairman-383382|title = http://www.newsweek.com/meet-omid-kordestani-twitter-new-executive-chairman-383382|last = Lee|first = Seung|publisher = ''[[NewsWeek]]''|date = October 14, 2015|accessdate = October 18, 2015}}</ref>

| 2015 || November 3 || Product || Twitter replaces the Favorite button with a Like button and the star symbol (used to symbolize favoriting) with a heart symbol.<ref>{{cite web|url = https://blog.twitter.com/2015/hearts-on-twitter|title = Hearts on Twitter|date = November 3, 2015|accessdate = April 24, 2016|last = Kumar|first = Akarshan|publisher = [[Twitter]]}}</ref><ref>{{cite web|url = http://www.theverge.com/2015/11/3/9661180/twitter-vine-favorite-fav-likes-hearts|title =  Twitter officially kills off favorites and replaces them with likes. Stars dust|last = Newton|first = Casey|publisher = ''[[The Verge]]''|date = November 3, 2015|accessdate = April 24, 2016}}</ref><ref>{{cite web|url = http://techcrunch.com/2015/11/03/so-we-feel-heard/|title = Twitter Found Love In A Fave-Less Place|last = Constine|first = Josh|date = November 3, 2015|accessdate = April 24, 2016|publisher = ''[[TechCrunch]]''}}</ref> Twitter reports a 6% increase in usage of the feature after the change,<ref>{{cite web|url = http://techcrunch.com/2015/11/10/twitter-sees-6-increase-in-like-activity-after-first-week-of-hearts/|title = Twitter Sees 6% Increase In "Like" Activity After First Week Of Hearts|last = Olanoff|first = Drew|date = November 6, 2015|accessdate = April 24, 2016|publisher = ''[[TechCrunch]]''}}</ref> and also appears to be experimenting with offering a more diverse set of emojis, prompting commentators to draw parallels with Facebook's Reactions feature.<ref>{{cite web|url = http://techcrunch.com/2015/11/16/not-into-the-hearts-twitter-appears-to-be-testing-multi-emoji-reactions/|title = Not Into The Hearts? Twitter Appears To Be Testing Multi-Emoji Reactions|date = November 16, 2015|accessdate = April 24, 2016|publisher = ''[[TechCrunch]]''|last = Olanoff|first = Drew}}</ref>

| 2015 || November 4 || Product || Twitter launches a political transparency page, so that people can better engage with policy issues on Twitter.<ref>{{cite web|url = http://techcrunch.com/2015/11/04/twitter-launches-a-political-transparency-page/|title = Twitter Launches A Political Transparency Page|date = November 4, 2015|accessdate = April 24, 2016|publisher = ''[[TechCrunch]]''|last = Buhr|first = Sarah}}</ref>

| 2016 || February–March || Product || Twitter rolls out a change to its feed, making recommended tweets the default option, rather than the reverse chronological format that it had used since launch.<ref>{{cite web|url = http://www.theverge.com/2016/2/6/10927874/twitter-algorithmic-timeline|title =  Here's how Twitter's new algorithmic timeline is going to work. Yes, you can opt out|last = Newton|first = Casey|date = February 6, 2016|accessdate = April 24, 2016|publisher = ''[[The Verge]]''}}</ref> The rollout officially begins on February 10.<ref>{{cite web|url = https://blog.twitter.com/2016/never-miss-important-tweets-from-people-you-follow|title = Never miss important Tweets from people you follow|last = Jahr|first = Mike|date = February 10, 2016|accessdate = April 24, 2016|publisher = [[Twitter]]}}</ref><ref>{{Cite web|url = http://techcrunch.com/2016/02/10/twitter-will-now-put-recommended-not-recent-tweets-at-the-top-of-your-timeline/|title = Twitter Will Now Put Recommended (Not Newest) Tweets At the Top Of Your Timeline|last = Lynley|first = Matthew|date = February 10, 2016|accessdate = April 24, 2016|publisher = ''[[TechCrunch]]''}}</ref> The rollout is completed on March 17, 2016.<ref>{{cite web|url = http://thenextweb.com/twitter/2016/03/17/twitter-quietly-turned-new-algorithmic-timeline-everyone/|title = Twitter is now turning on its new algorithmic timeline for everyone|last = Williams|first = Owen|date = March 17, 2016|accessdate = April 24, 2016|publisher = ''The Next Web''}}</ref> Users are allowed to opt out, but Twitter reports in April 2016 that the percentage of users who opted out is in the "low single digits".<ref>{{cite web|url = http://techcrunch.com/2016/03/18/twitter-says-few-users-have-opted-out-of-its-new-algorithmic-timeline/|title = Twitter says few users have opted out of its new, algorithmic timeline|date = March 18, 2016|accessdate = April 24, 2016|publisher = ''[[TechCrunch]]''|last = Perez|first = Sarah}}</ref>

| 2016 || September 23 || Acquisition (potential) || [[CNBC]] reports that Twitter is in talks with potential acquirers including [[Google]] and [[Salesforce.com]].<ref>{{cite web|url = http://www.cnbc.com/2016/09/23/twitter-may-receive-formal-bid-shortly-suitors-said-to-include-salesforce-and-google.html|title = Twitter may soon get formal bid, suitors said to include Salesforce and Google|last = Faber|first = David|last2 = Balakrishnan|first2 = Anita|publisher = [[CNBC]]|date = September 23, 2016|accessdate = October 22, 2016}}</ref> On the same day, ''[[TechCrunch]]'' reports on the departure of two key Twitter team members.<ref>{{cite web|url = https://techcrunch.com/2016/09/23/fresh-twitter-departures-include-u-s-moments-lead-and-head-of-tv/?ncid=rss|title = Fresh Twitter departures include U.S. Moments lead and head of TV|last = Etherington|first = Darrell|date = September 23, 2016|accessdate = October 21, 2016|publisher = ''[[TechCrunch]]''}}</ref>

| 2016 || October 21 || Downtime || A [[distributed denial of service]] attack on DNS provider [[Dyn (company)|Dyn]]'s servers in the United States East Coast causes DNS resolution problems for many websites include Twitter, [[Reddit]], [[GitHub]], [[Spotify]], and others, mostly for users in the Americas.<ref>{{cite web|url = http://www.usatoday.com/story/tech/2016/10/21/cyber-attack-takes-down-east-coast-netflix-spotify-twitter/92507806/|title = East coast Internet service attack resolved|last = Blumenthal|first = Eli|last2 = Weise|first2 = Elizabeth|date = October 21, 2016|accessdate = October 22, 2016|publisher = ''[[USA Today]]''}}</ref>

| 2016 || October 27 || || Twitter announces that it plans to cut 350 jobs (around 9% of its global workforce).<ref>{{cite web |url=https://www.nytimes.com/2016/10/28/technology/twitter-job-cuts-q3-earnings.html |date=Oct. 27, 2016 |publisher=[[The New York Times]] |title=Twitter to Cut Jobs as It Aims for a Turnaround |author=MIKE ISAAC |accessdate=February 21, 2017}}</ref>

| 2016 || November 9 || Company operation || Adam Bain, Twitter's [[chief operating officer]], announces he will leave the company.<ref>{{cite web |url=https://www.nytimes.com/2016/11/10/technology/adam-bain-twitter-chief-operating-officer-step-down.html |date=Nov. 9, 2016 |publisher=[[The New York Times]] |title=Twitter’s Chief Operating Officer to Step Down |author=MIKE ISAAC |accessdate=February 21, 2017}}</ref>

| 2016 || December 20 || Company operation || Adam Messinger, Twitter's [[chief technology officer]], announces his departure from the company.<ref>{{cite web |url=https://www.nytimes.com/2016/12/20/technology/twitters-chief-technology-officer-to-leave-company.html |date=Dec. 20, 2016 |publisher=[[The New York Times]] |title=Twitter’s Chief Technology Officer to Leave Company |author=MIKE ISAAC |accessdate=February 21, 2017}}</ref> On the same day, Josh McFarland, a vice president of product, also announces his departure from Twitter.<ref>{{cite web |url=https://techcrunch.com/2016/12/20/twitters-cto-adam-messinger-is-leaving-the-company/ |date=December 20, 2016 |publisher=TechCrunch |title=Twitter’s CTO Adam Messinger is leaving the company along with VP of product Josh McFarland |author=Matthew Lynley |accessdate=February 21, 2017}}</ref><ref>{{cite web |url=https://techcrunch.com/2016/12/20/greylock-just-hired-josh-mcfarland-who-sold-his-greylock-backed-company-to-twitter/ |date=December 20, 2016 |publisher=TechCrunch |title=Greylock just hired Josh McFarland, who sold his Greylock-backed company to Twitter |author=Connie Loizos |accessdate=February 21, 2017}}</ref>

| 2017 || January 12 || Competition || The founders of [[App.net]] announce that the platform will shutdown on March 14, 2017. App.net has been called "an ad-free, subscription-based, Twitter clone".<ref>{{Cite web|url=http://blog.app.net/2017/01/12/app-net-is-shutting-down/|title=App.net is shutting down|last=|first=|date=|website=|publisher=|access-date=12 January 2017}}</ref><ref>{{cite web |url=https://techcrunch.com/2017/01/12/app-net-the-ambitious-project-to-build-a-better-twitter-is-finally-dead/ |date=January 13, 2017 |publisher=TechCrunch |title=App.net, the ambitious project to build a better Twitter, is finally dead |author=John Mannes |accessdate=February 21, 2017}}</ref> The source code for App.net will be made available through its [[GitHub]] account.<ref>{{cite web |url=https://github.com/appdotnet |title=App.net |publisher=GitHub}}</ref>

| 2017 || January 27 || Legal || Twitter releases two [[national security letter]]s it had received from the [[United States federal government]]. The release followed the lifting of the [[gag order]] placed on Twitter to not release the letters. The letters are from September 2015 and June 2016.<ref>{{cite web |url=https://techcrunch.com/2017/01/27/twitter-releases-national-security-letters/ |date=January 27, 2017 |publisher=TechCrunch |title=Twitter releases national security letters |author=Kate Conger |accessdate=February 21, 2017}}</ref><ref>{{cite web |url=http://www.theverge.com/2017/1/28/14425122/twitter-publishes-fbi-national-security-letters-following-gag-order-lift |date=January 28, 2017 |author=Andrew Liptak |publisher=The Verge |title=Twitter publishes FBI national security letters following gag order lift |accessdate=February 21, 2017}}</ref><ref>{{cite web |url=http://venturebeat.com/2017/01/27/twitter-shares-2-redacted-national-security-letters-from-the-fbi/ |publisher=VentureBeat |title=Twitter shares 2 redacted National Security Letters from the FBI |accessdate=February 21, 2017 |author=Jordan Novet |date=January 27, 2017}}</ref><ref>{{cite web |url=https://blog.twitter.com/2017/transparency-update-twitter-discloses-national-security-letters |author=Elizabeth Banker |title=#Transparency update: Twitter discloses national security letters |date=January 27, 2017 |publisher=Twitter |accessdate=February 21, 2017}}</ref>

* [[Timeline of Facebook]]

* [[Timeline of Instagram]]

* [[Timeline of Snapchat]]

* [[Timeline of Pinterest]]

* [[Timeline of LinkedIn]]

* [[Timeline of social media]]

[[Category:Company histories|Twitter]]

[[Category:Twitter]]

[[Category:Technology company timelines|Twitter]]

[[Category:Company timelines|Twitter]]