Parag Agrawal was named the new Chief Executive Officer (CEO) on November 29, 2021. His appointment came rolling in after the co-creator of Twitter Jack Dorsey stepped down from the same post. Parag was appointed as Chief Technology Officer (CTO) in 2018. He had joined the microblogging site in 2011 as an Ads Engineer. While doing so, he succeeded Adam Messinger, who left the company in December 2016. Soon after the news broke, Parag, in a Twitter post, expressed gratitude and honour toward Dorsey for mentoring him. Attached to the tweet was his email to the company, talking about his experience. Deep gratitude for @jack and our entire team, and so much excitement for the future. Here’s the note I sent to the company. Thank you all for your trust and support, the Twitter CEO tweeted. Parag Agrawal is an alumnus of the Indian Institute of Technology-Bombay (IIT-B). Following that he completed his PhD in computer science from Stanford University in 2011. Apart from being an Ads Engineer, he has also held the post of Distinguished Software Engineer. Before Twitter, he did stints at AT&T, Microsoft and Yahoo. At Twitter, he helped the team increase the relevance of tweets in Twitter users' timelines using Artificial Intelligence (AI), which in turn helps Twitter in preventing abuse on the social network. He is responsible for Twitter's Technical Strategy, Machine Learning, Artificial Intelligence, Consumer, Revenue and Science teams. According to Parag's biography on the Twitter leadership page, he is responsible for Twitter’s technical strategy and overseeing machine learning and AI across the consumer, revenue, and science teams. In December 2019, former Twitter CEO Jack Dorsey announced that Agrawal would be in charge of Project Bluesky, an independent team of open source architects, engineers and designers to develop an open and decentralized standard for social media that would help better control abusive and misleading information on its platform.