In this photo illustration, Elon Musk's new Twitter avatar "White X on black background" is displayed on a mobile phone with Twitter little blue birds logo in the background. Twitter is undergoing a major rebrand after owner Elon Musk announced that the platform would officially become "X" over the weekend, and CEO Linda Yaccarino addressed the change in a memo Monday that applauded employees for their hard work. The transition from Twitter to X reflects a step toward Musk's goal to turn the platform into what he has called an "everything app." Going forward, she wrote, X will continue to develop experiences in video, audio, messaging, banking and payments that will "delight" users. "Please don't take this moment for granted," Yaccarino wrote.

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Persons: Elon, Elon Musk, Linda Yaccarino, CNBC's Sara Eisen, Yaccarino, X Organizations: Twitter