Complex sentence: Groove was aquired by Microsoft in 2005, and Ozzie became one of three Chief Technical Officers there, and on June 15 2006 took over the role of Chief Software Architect from Bill Gates.
Split into simpler sentences: Groove was aquired by Microsoft in 2005, where Ozzie became one of three Chief Technical Officers. On June 15 2006 took over the role of Chief Software Architect from Bill Gates.