Alliance Technologies Corporation (ATC) was organized in 1990 by a group of executives and leading professionals in the information technology industry. At first, it distributed AT&T Global Information Systems products. It was then in 1993 that ATC received its appointment as an authorized distributor of Avaya Communication's Business Communications System (then LucentTechnologiesBusiness Communications System).

It is the first Avaya Gold Business Partner in the Philippines, and has the most number of call center seats installed for both U.S. outsource and local insource companies, having a total of 9,000 seats. Its expertise includes IP telephony, call center and CRM, data networking, PBX and key telephone
systems, voice recording (Nice), call accounting (Interpac), data storage (EMC), structured cabling, audio and video teleconferencing (Polycom). ATC is also a Gold Partner of Sun Microsystems, a Business Partner of Lucent, Nice and Hewlett Packard.