Dynamically configuring, allocating and deploying computing systems

Computing systems can be dynamically configured, allocated, and deployed based on user requirements. For example, a user can request a number of servers for dynamic configuration, allocation, and deployment. Embodiments provide a quick and efficient way for users to test code and programs, debug code and programs, and/or perform other configuration and testing operations using one or more computing systems, such as a cluster of servers. Reserved systems are dynamically configured with necessary code and/or content according to user requirements. The reserved cluster of systems can be returned to an available pool once a reservation expires, allowing the returned systems to be used for a subsequent reservation.