The U.S. Black Book (IDC #250810) is IDC's quarterly analysis of the status and projected growth of the IT industry in 50 states and across 15 vertical markets. This provides U.S. sales and marketing organizations with a detailed analysis of the status and projected growth of the IT industry in 50 states and across 15 vertical markets and 15 technologies. IT spending breakouts include major segments of hardware, software, and IT services.