Cloud Solution Provider (CSP) Program is Microsoft channel model to allow partners to deliver Microsoft Cloud services to Customers. The program helps partners to craft differentiated solutions using different products and services from Cloud portfolio.
CSP is available in Direct and Indirect models. CSP direct model allows a partner to offer solutions to customer. CSP Indirect model allows partner to deliver solutions through reseller channel. For complete information on the CSP program details refer page here or watch this short video.
rhipe is a CSP Indirect provider and has thousands of resellers in its channel.