Philippe Vannier

Bull SA designs and develops information technology solutions. The company was founded on March 9, 1931 and is headquartered in Les Clayes-sous-Bois, France.

Crescendo Industries SAS operates as a holding company with interest in develops software and hardware equipment for the telecom, military, industrial, transport, and energy sectors. It also provides engineering services. The company was founded by Philippe Vannier in 2004 and is headquartered in Paris, France.

Elexo SAS, founded in 1971, engages in the distribution of laptops and tablets. The company is based in Boulogne-Billancourt, France.

Bull ISS SASU provides information technology and computer programming services. The company is headquartered in Boulogne-Billancourt, France.

Amesys SASU develops security systems. It provides solutions to the defense, aerospace, telecommunications, transportation, energy, network, and microelectronics industries. The company was founded in 2007 and is headquartered in Aix-en-Provence, France.

Numergy SAS provides cloud computing services. It builds and develops a network of partners composed of publishers, integrators, and resellers. The company was founded in September 2012 and is headquartered in Courbevoie, France.