CDW Corporation (CDW) provides integrated information technology (IT) solutions. The Company's segments include Corporate, Public and Other. The Corporate segment consists of private sector business customers. The Corporate segment is divided into a medium/large business customer channel, serving customers with approximately 100 employees and a small business customer channel, serving customers with over 100 employees. The Public segment consists of government agencies and education and healthcare institutions. The Other segment includes CDW Advanced Services, Canada and Kelway. The CDW Advanced Services business consists of customized engineering services delivered by technology specialists and engineers, and managed services that include infrastructure as a service offering. Its array of offerings ranges from discrete hardware and software products to integrated IT solutions, such as mobility, security, data center optimization, cloud computing, virtualization and collaboration.