Twitter has become X.com

Elon Musk on Friday announced that the social media platform X, formerly known as Twitter, has fully migrated to X.com after it was purchased by the tech billionaire in late 2022.

Musk, 52, posted an image of a logo of a white X on a blue circle on the platform, writing: "All core systems are now on X.com."

The tech billionaire had purchased the platform in October 2022 for $44 billion and announced the rebrand to X last July, as part of which the logo and branding were changed to "X," but the domain name remained Twitter.com until Friday.

The letter X has been quite common in the branding of Musk's companies since 1999 when he set up an online financial superstore called X.com, CBS News reported.

He also set up a company called X Corp to close the deal when he bought Twitter.

Musk has said he wants "X" to become a super-app along the lines of China's WeChat, which incorporates messaging, voice and video calling, social media, mobile payment, games, news, online booking and more.

He has also introduced an AI chatbot called "Grok," on X which was launched in Europe this week.

Musk's leadership of X has sparked controversy with mass layoffs, technical issues, and the reinstatement of accounts belonging to right-wing figures, including Donald Trump.

European regulators are investigating X and other social media over concerns about misinformation.