You can use cloud security gateway (CSG, also known as cloud access security broker or CASB) solutions to detect and protect against: 1) data loss, 2) excessive sensitive data access, and 3) use of unsanctioned (shadow IT) applications, as well as to encrypt cloud data. But to realize these benefits, you'll first have to select from a diverse set of vendors that vary by size, functionality, geography, and vertical market focus. Security and risk professionals should use this report to understand the value they can expect from a CSG provider and to select one based on size and functionality.