13. Ingram Micro
Fortune 500 Rank: No. 76
Revenue: $37.8 billion
Top Executive: President and CEO Alain Monie
Santa Ana, Calif.-based Ingram Micro moved up five spots from No. 81 last year, the only distributor on our list to do so. The company has moved aggressively to become a "master cloud aggregator" and help solution providers build cloud computing services through multiple initiatives such as its "Seeding the Cloud" program. In April, it rolled out a professional services platform for North American partners.