For one of the travel industry leaders and one of the largest data center operators in Europe, virtualization appeared to be the ideal solution for lowering infrastructure management costs and controlling the sprawl of physical servers. But this presented a challenge: Capacity planning and management was still performed using traditional processes and tools that proved to be wholly inadequate to control the new environment. Forrester interviewed the system planning manager for this large data center operator to understand how it addresses these new issues and takes advantage of IT service management and automation tools to better manage and plan capacity.