Working on Things that Matter at Tysons-Headquartered Appian Founded 25 years ago by four roommates in a Fairfax County apartment, Tysons-based Appian has grown to be a global company. Appian is a leading software company that automates business processes for some of the most innovative businesses and government agencies across the world. Located in a state-of-the-art glass office tower in Tysons, Appian … Read More