Twitter

Product brand

A globally influential real-time social networking platform that operated under the Twitter name from 2006 until its rebranding as X in 2023.

Last updated November 4, 2026

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First read: Oct 29, 2026
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Overview

Twitter was an American social networking service centered on short, public messages that became known as tweets. The service emerged in 2006 from Odeo, a podcasting company founded by Evan Williams, after Jack Dorsey proposed a system for sending brief status updates by text message. Biz Stone and other Odeo personnel helped develop the idea, and the first version was used internally before being incorporated as a separate company. Its early growth was initially modest, but public exposure at the South by Southwest Interactive festival in 2007 helped establish Twitter as a distinctive communications product. The service combined a simple publishing format with social discovery. Users could follow accounts, reply to posts, repost them, send direct messages, and organize conversations through hashtags. Its short-message structure made it particularly effective for breaking news, live events, political discussion, entertainment, sports, customer service, and professional networking. Features that later became closely associated with the brand included the @username convention, hashtags, trending topics, embedded media, retweets, verification, lists, and chronological or algorithmically ranked timelines. Although the original service imposed a 140-character limit, the limit was expanded to 280 characters for most users in 2017. Twitter developed from a communication tool into a major advertising and information-distribution business. Its commercial products included promoted posts, promoted accounts, video advertising, app-install campaigns, audience-targeting tools, and data and API services for developers, researchers, publishers, and enterprises. The company also expanded through acquisitions and product development, including TweetDeck, Crashlytics, Gnip, TellApart, Periscope, Vine-related technology, and other advertising, analytics, mobile, and media assets. These transactions were intended to strengthen user engagement, developer infrastructure, real-time media, and monetization. Twitter became a public company through an initial public offering on the New York Stock Exchange in November 2013. During the public-company period, it faced persistent pressure to increase user growth, improve advertising performance, and clarify its role in online speech and news distribution. Leadership changed several times, including transitions from Jack Dorsey to Evan Williams, Dick Costolo, Dorsey again, and Parag Agrawal. The company also faced recurring criticism and regulatory scrutiny concerning harassment, abuse, misinformation, moderation, privacy, transparency, and the use of its platform during elections and civil unrest. In 2022, Elon Musk accumulated a substantial stake and agreed to acquire Twitter in an all-cash transaction. The transaction was contested in court after Musk attempted to withdraw, but the acquisition closed on October 27, 2022. Twitter became privately held, many senior executives and employees departed, and the company pursued a major restructuring. The corporate entity was merged into X Corp. in 2023, and the consumer service was rebranded as X during the same year. The Twitter name, bird imagery, and terminology were progressively replaced by X branding, although the former name continued to be used informally and historically. The Twitter brand is therefore best treated as a defunct or retired platform brand whose successor service operates as X.

History

Twitter began in 2006 as an internal project associated with Odeo, a San Francisco podcasting company led by Evan Williams. Jack Dorsey proposed a service based on short status messages distributed through mobile phones and the web. Biz Stone and other members of the Odeo team helped develop the product. The service was initially known as twttr, reflecting an early convention of omitting vowels from short technology brand names, before adopting the Twitter name. Early adoption was gradual, but attention increased after Twitter was demonstrated prominently at South by Southwest Interactive in 2007. The service's design encouraged public following rather than private, one-to-one communication. Users could post brief updates, follow accounts, reply publicly, and redistribute messages. Community practices such as hashtags and the @ symbol developed into core platform conventions. Twitter subsequently formalized and expanded these features, helping make the service useful for breaking news, live events, political communication, celebrity interaction, activism, and customer support. Leadership changed as the company grew. Dorsey initially served as chief executive, followed by Williams in 2008 and Dick Costolo in 2010. Twitter expanded its infrastructure, audience, mobile applications, advertising products, and developer ecosystem during this period. It also acquired or integrated companies and technologies in social-media management, mobile analytics, advertising, data, video, and live streaming. TweetDeck became a prominent tool for managing multiple feeds, while acquisitions such as Crashlytics, Gnip, and TellApart supported developer analytics, data services, and advertising capabilities. Twitter introduced commercial products including promoted tweets, promoted accounts, promoted trends, video advertising, audience targeting, and performance-oriented campaigns. Its business model depended substantially on advertising, although data licensing and developer services also contributed to its commercial scope. Twitter's real-time nature gave advertisers access to conversations organized around keywords, interests, events, and public figures. At the same time, the company had difficulty converting its cultural influence into consistently strong user growth and advertising results. The company filed for an initial public offering in 2013 and began trading on the New York Stock Exchange in November of that year under TWTR. As a public company, Twitter faced continuing investor demands for stronger monetization, clearer product strategy, and faster audience expansion. Costolo left the chief executive role in 2015, and Dorsey returned. Product changes during the public-company period included longer character limits, algorithmic timeline features, Moments, improved media tools, live video, verification systems, and expanded safety and abuse-prevention programs. Twitter also became central to debates about online speech and platform governance. It was criticized over harassment, abusive conduct, extremist content, misinformation, political manipulation, privacy, moderation consistency, and the handling of high-profile accounts. Governments and regulators in different markets increasingly treated the service as important communications infrastructure. These issues produced tension between free-expression principles, user safety, legal compliance, and commercial brand requirements. In 2020, Elliott Management's investment and campaign for governance changes added pressure on Dorsey and the board. Dorsey remained chief executive until late 2021, when Parag Agrawal succeeded him. In early 2022, Elon Musk began acquiring Twitter shares and disclosed a large stake. He later made an unsolicited offer to purchase the entire company. Twitter's board adopted defensive measures before accepting the offer. Musk subsequently attempted to terminate the agreement, leading Twitter to sue for enforcement. The dispute ended when the transaction closed on October 27, 2022. Following the acquisition, Twitter became privately held and underwent significant organizational and product changes. Musk became chief executive, senior leaders departed, staffing was reduced, and paid verification and other product policies were revised. The company pursued a vision of X as a broader or 'everything' application rather than solely a microblogging service. Twitter, Inc. was merged into X Corp. in 2023, and the consumer-facing service was renamed X. The Twitter name remains historically important and is still widely used when describing the platform's pre-2023 identity, but the original brand is no longer the active corporate or consumer name.

2023
Twitter becomes X
[5]X, formerly Twitterbritannica.com
Twitter, Inc. is merged into X Corp. and the consumer service is rebranded as X.
2022
Elon Musk completes acquisition
[3]Acquisition of Twitter by Elon Musken.wikipedia.org
Musk completes the purchase and Twitter becomes privately held.
2021
Parag Agrawal becomes chief executive
[1]Twitter, Inc.en.wikipedia.org
Agrawal succeeds Dorsey as chief executive.
2017
Character limit expands to 280
[1]Twitter, Inc.en.wikipedia.org
Twitter expands the standard post limit from 140 to 280 characters for most users.
2015
Jack Dorsey returns as chief executive
[1]Twitter, Inc.en.wikipedia.org
Dorsey returns to lead the company after Costolo's departure.
2013
Initial public offering
[4]Twitter shares soar in frenzied NYSE debutreuters.com
Twitter lists on the New York Stock Exchange under TWTR.
2011
TweetDeck is acquired
[7]TweetDeck is acquireden.wikipedia.org
Twitter acquires TweetDeck, strengthening tools for professional and multi-account social-media management.
2010
Dick Costolo becomes chief executive
[2]Timeline of Twitteren.wikipedia.org
Costolo takes over leadership as Twitter expands its audience, infrastructure, and commercial operations.
2008
Evan Williams becomes chief executive
[2]Timeline of Twitteren.wikipedia.org
Williams succeeds Dorsey as Twitter's chief executive during the company's early growth phase.
2007
South by Southwest accelerates visibility
[2]Timeline of Twitteren.wikipedia.org
Public exposure at the SXSW Interactive festival helps Twitter gain wider attention and user adoption.
2006
Twitter project is created
[2]Timeline of Twitteren.wikipedia.org
A short-message service is developed within Odeo and begins operating as an internal project.

Products and positioning

Real-time information network and public conversation platform

Social networking service · 2006
Twitter platform
The core service allowed users to publish short public posts, follow accounts, reply, repost, like, share media, and communicate through direct messages. Its real-time feed and discovery features made it especially influential for breaking news, live events, entertainment, politics, and customer interaction. The platform was rebranded as X in 2023.
Digital advertising · 2010
Twitter Ads
Twitter Ads enabled businesses, publishers, and organizations to promote posts, accounts, videos, applications, and website actions. Campaigns could be organized around awareness, engagement, traffic, app activity, or conversions, with targeting based on factors such as interests, keywords, location, behavior, and custom audiences.
Social-media management software · 2008
TweetDeck
TweetDeck provided a multi-column interface for monitoring timelines, searches, lists, mentions, and multiple accounts. It became particularly useful to journalists, publishers, marketers, and professional social-media teams that needed to follow several real-time information streams simultaneously.
Developer and data services · 2006
Twitter API
Twitter's application programming interfaces enabled third parties to integrate posting, reading, account, analytics, and other platform functions into software. The API ecosystem supported independent applications, research, media monitoring, automation, and enterprise data products, although access levels and pricing changed substantially over time.

Controversies

2022
Dispute over Elon Musk's acquisition agreement
Musk attempted to withdraw from the agreed acquisition, citing concerns including the prevalence of automated and spam accounts. Twitter sued to enforce the agreement, and the matter ended when Musk completed the purchase in October 2022.
Source
2021
Twitter faces criticism over Pelosi tweet moderation
In January 2021, Twitter users criticized the platform over its handling of a 2017 tweet by Nancy Pelosi that resurfaced and remained available on the site. The users described the moderation as inconsistent, contrasting the continued availability of the Pelosi tweet with Twitter's suspension of Donald Trump's account. The criticism centered on the platform's moderation standards rather than on any specific action taken regarding the Pelosi tweet.
Source
2021
Twitter withholds tweets in India after government request
Twitter withheld some tweets critical of the Indian government's handling of the pandemic after a legal request from the Indian government. Lawmakers and rights activists criticized the removals, saying they risked public health and freedom of speech.
Source
2021
Twitter faces backlash over Project Veritas account suspensions
Twitter faced criticism after permanently suspending Project Veritas founder James O'Keefe and banning the Project Veritas account. The article reports criticism of the suspensions and accusations that Twitter was protecting CNN; these are reported as allegations and reactions, not established findings.
Source
2021
Appeals court upholds dismissal of Pulse shooting lawsuit against social media companies
A federal appeals court upheld the dismissal of a lawsuit that alleged Twitter, Google and Facebook should be held liable for the 2016 Pulse nightclub massacre. The court stated that the plaintiffs had not shown the attack was international terrorism as defined by law.
Source
2021
Moscow court fines Facebook and Twitter over prohibited content
In a controversy noted in the brand wiki, a Moscow court fined Facebook 21 million roubles and Twitter 5 million roubles for failing to delete content prohibited by Russian law. The ruling was reported on 14 September 2021. The court action concerned the companies' non-removal of content that Russian law prohibits. The event is recorded as a regulatory penalty against both platforms, with the fine amounts differing between the two companies.
Source
2021
Russian court fines Twitter, Meta and TikTok over content
A Moscow court fined Twitter, Meta Platforms and TikTok for failing to delete content the Russian government deems illegal. Meta was fined 13 million roubles across three cases, Twitter 10 million across two cases, and TikTok 4 million.
Source
2021
Twitter appeals French court order on hate-speech documents
Twitter appealed a French court decision ordering it to give activists full access to relevant documents about its efforts to fight hate speech. A hearing was set for December 9, 2021.
Source
2021
Moscow court fined Twitter for failing to remove illegal data
A Moscow court fined Twitter nearly $116,000 in three cases concerning its failure to remove information alleged to breach Russian law. The court said the fine was payable within sixty days.
Source
2021
Twitter reactivates French teenager's account after admitting suspension error
After suspending French teenager Mila's account, Twitter reactivated it on Monday morning and acknowledged that the suspension was a mistake.
Source

Marketing campaigns

Promoted Posts and Twitter Ads
Global
Twitter developed an advertising model in which brands could amplify posts and accounts within users' timelines and search results. Formats evolved to include text, image, video, carousel, app-install, and event-oriented placements, with targeting based on audience interests and real-time conversations.
Outcome. The program became a core commercial offering and was later carried forward under the X advertising brand.
Source
Real-time and hashtag campaigns
Global
Twitter enabled brands, media organizations, public institutions, and event organizers to coordinate organic posts around hashtags, replies, polls, live commentary, and user-generated content. The format emphasized rapid participation and public conversation rather than static display advertising.
Outcome. Hashtag-based campaigns became a standard social-media marketing practice and a defining use of the Twitter platform.
Source

Brand decisions

2023
Rebrand the service as XStrategy
Background
Musk positioned the platform as part of a broader X-branded product intended to extend beyond microblogging.
Action taken
Twitter, Inc. was merged into X Corp., and the consumer service adopted the X name and branding.
Aftermath
Twitter ceased to be the active consumer brand, although its name continued to be used as a historical reference.
Source
2022
Accept Elon Musk's acquisition offerM&A
Background
Musk made an unsolicited offer after acquiring a major stake, while Twitter's board initially adopted defensive measures against a possible hostile takeover.
Action taken
The board accepted the all-cash transaction, which closed on October 27, 2022.
Aftermath
Twitter became privately held, underwent extensive restructuring, and was later merged into X Corp.
Acquisition value. 44000000000 (2022)
Source
2013
Proceed with a public listingStrategy
Background
Twitter sought public-market capital and a formal valuation as it expanded its user base, advertising business, and technology infrastructure.
Action taken
The company filed for an IPO and listed on the New York Stock Exchange under TWTR.
Aftermath
Twitter became a publicly traded company and faced continuing investor scrutiny over growth and monetization.
Source

Recent events

Unconfirmed
Reported2022.03.10
Twitter launches onion service to bypass Russia's block[71]Twitter推出洋葱服务以绕过俄罗斯封锁kcra.com
Twitter launched a privacy-protected onion version of its site to bypass surveillance and censorship after Russia restricted access to its service.
Unconfirmed
Reported2022.03.08
Twitter introduces a Tor onion service[72]Twitter 推出 Tor onion 服务engadget.com
Twitter introduced a Tor onion service intended to allow access to the social network where it is blocked and to help protect users against surveillance.
2022.03.08
Reported2022.03.09
Twitter introduces Creator Dashboard[73]Twitter推出Creator Dashboardeconomictimes.indiatimes.com
Twitter introduced the Creator Dashboard, a tool for eligible iOS creators in the United States to review monetization earnings, payment history, and upcoming payouts.
2022.02.16
Reported2022.02.16
Twitter partners with Paytm to expand Tips payment support in India[74]Twitter与Paytm合作拓展印度Tips支付支持economictimes.indiatimes.com
Twitter said it partnered with Paytm Payments Services to support its Tips feature in India with payment options including Paytm's digital wallet, Paytm Postpaid, cards, and net banking.
2022.02.10
Reported2022.02.10
OpenNode completes $20 million Series A funding[75]OpenNode完成2000万美元A轮融资coinspeaker.com
Bitcoin payment provider OpenNode completed an oversubscribed Series A funding round of $20 million, led by Kingsway Capital, with further investments from Twitter, Tim Draper, and Avon Ventures.
2022.02.04
Reported2022.02.08
Twitter expands testing of Upvote and Downvote[76]推特扩大“Upvote”和“Downvote”功能测试newtalk.tw
Twitter announced an expansion of testing for its Upvote and Downvote features, making them available for iOS and Android users, with selected users worldwide included in the test.
2022.01.21
Reported2022.01.21
Twitter rolls out Communities on its Android app[77]Twitter在Android应用程式推出Communities功能thehindubusinessline.com
Twitter began rolling out its Communities feature on the Android app, extending access to the feature that had previously been available on iOS, the web, and Android mobile browsers.
2022.01.13
Reported2022.01.12
Twitter appoints Mitchell Kreuch as Southeast Asia Managing Director[78]Twitter 任命 Mitchell Kreuch 为东南亚区董事总经理macaubusiness.com
Twitter announced the appointment of Mitchell Kreuch as its new Managing Director of Southeast Asia. He will be responsible for continuing and accelerating Twitter's revenue growth in the region.
2022.01.13
Reported2022.01.13
Twitter announces voter-education campaign for 2022 assembly elections[79]Twitter宣布为2022年邦议会选举开展选民教育活动businesstoday.in
Twitter announced a series of election-related initiatives, including a voter education quiz and a notification campaign encouraging people to sign up for voting reminders. The article says the campaign would launch on January 25.
2022.01.06
Reported2022.01.06
Twitter tests Tweet Take and a redesigned composer bar[80]Twitter 测试 Tweet Take 和重新设计的发帖编辑栏androidcentral.com
Twitter introduced Tweet Take, an option for responding to a tweet with an image or video that embeds the original tweet, and tested a redesigned composer bar on iOS.

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