This document provides an overview of colocation services. It defines colocation as housing servers and devices in a professional data center to access economies of scale, infrastructure, bandwidth and services. Benefits outlined include a predictable cost model, quick scalability, expert management, disaster recovery options, and allowing IT staff to focus on core work. Typical colocation customers are described as web companies, enterprises, telecoms and ecommerce sites. The document promotes incorporating colocation to better manage space, capacity issues and minimize capital costs.