Jack Dorsey (Twitter)

Jack Dorsey is an American technology entrepreneur best known as the co-founder of Twitter, a popular social media platform that allows users to share short messages called tweets. He served as Twitter's CEO twice, first from 2006 to 2008 and later from 2015 to 2021. Dorsey is also the CEO of Square, a financial services company that helps businesses accept digital payments. Known for his unique approach to business and technology, Dorsey's work significantly influenced how people communicate online and conduct financial transactions. His leadership has also sparked discussions about social media's role and responsibility in society.