The document provides a technical design for a Hybrid Cloud Computing (HC2) platform in 4 phases. Phase I will provide infrastructure as a service (IaaS) on Windows and Linux to simplify development environments. It will leverage existing assets where possible. Future phases will expand services and integrate additional tools to provide a flexible, scalable and highly available cloud platform behind the company firewall for development workloads. The design prioritizes simplicity, customer experience, and leveraging existing technologies.