Description USinternetworking (USi) knew that providing quality service is key to being a good host. The company provided hosted applications via the Internet for large companies looking for managed software services. It offered applications from vendors in the areas of enterprise resource planning and customer relationship management (Oracle), spend management (Ariba), messaging and collaboration (Microsoft), and custom developed e-commerce systems. USinternetworking's customers included the State of Maryland's Department of Health and Mental Hygiene, Sunburst Hospitality, and Yankee Candle. The company was acquired by US telecom service giant AT&T in 2006.