This document issued in June 2010 by the General Service Administration (GSA) Office of Chief Information Officer (OCIO) outlines GSA’s request for proposals to acquire e-mail and collaboration services as Software as a Service (SaaS) from a commercial provider of Cloud Computing services and software. The intent is to replace the current GSA enterprise on-premise e-mail and collaboration support to a primarily web-based, SaaS services and support contract that provides a highly innovative, creative, cost-effective, and evolving environment