text: In 2021, Twitter began the research phase of Bluesky, an open source decentralized social media protocol where users can choose which algorithmic curation they want. The same year, Twitter also released Twitter Spaces, a social audio feature; "super follows", a way to subscribe to creators for exclusive content; and a beta of "ticketed Spaces", which makes access to certain audio rooms paid. Twitter unveiled a redesign in August 2021, with adjusted colors and a new Chirp font, which improves the left-alignment of most Western languages.
  In June 2022, Twitter announced a partnership with e-commerce giant Shopify, and its plans to launch a sales channel app for U.S. Shopify merchants.
  On August 23, 2022, the contents of a whistleblower complaint by former information security head Peiter Zatko to the United States Congress were published. Zatko had been fired by Twitter in January 2022. The complaint alleges that Twitter failed to disclose several data breaches, had negligent security measures, violated United States securities regulations, and broke the terms of a previous settlement with the Federal Trade Commission over the safeguarding of user data. The report also claims that the Indian government forced Twitter to hire one of its agents to gain direct access to user data.
  2022–Present: Transition to X
  Elon Musk entered into a deal to acquire Twitter for US$44 billion on April 25, 2022. The deal formally closed on October 27, 2022, following an attempt by Musk to terminate the deal in July. Immediately following the closure of the deal, Musk ousted existing leadership at Twitter, Inc. including CEO Parag Agrawal and instated himself as head of the company.