Twitter’s history begins in 2006, when it was created by the co-founders Jack Dorsey, Noah Glass, Biz Stone, and Evan Williams. Initially developed as a side initiative at the company Odeo—a podcasting company—the idea was to create an SMS-based communication service. Jack Dorsey sent out the inaugural tweet on March 21, 2006, saying “just setting up my twttr”. https://todayshistory.org/21-march-2006/3941/