Twitter, Inc.
Dorsey, Stone and Noah Glass co-founded Obvious, which then spun off Twitter, Inc. In his role during the pivotal days of the company's founding, a compilation chronicling the originally named "twttr" and the time leading up to the official launch, is shown in a timeline of tweets revealing Twitter's beginnings. As chief executive officer, Dorsey saw the startup through two rounds of funding by the venture capitalists who backed the company. On October 16, 2008, Williams took over the role of CEO, and Dorsey became chairman of the board. On March 28, 2011, Dorsey returned to Twitter as Executive Chairman.
As the service began to grow in popularity, Dorsey chose the improvement of uptime as top priority, even over creating revenue – which, as of 2008, Twitter was not designed to earn. Dorsey described the commercial use of Twitter and its API as two things that could lead to paid features. His three guiding principles, which are shared by the whole company and through its culture, are simplicity, constraint, and craftsmanship.
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