What technology company created the Group Control System operating system and is located in Armonk, New York?
Group Control System Group Control System (GCS) is an operating system made by IBM, meant to run as a guest of VM. GCS is an integral component of the discontinued VM/SP (since VM/SP 4), VM/XA SP, VM/ESA and current z/VM IBM System product offerings.
Aviation Technology Group Aviation Technology Group (ATG) was an American aerospace company, the developer of the ATG Javelin very light jet (VLJ). It was founded in June 2000 by George Bye and has since gone out of business.