CDW Corp. engages in the provision of information technology solutions including mobility, security, data center optimization, cloud computing, virtualization and collaboration. It operates through the following segments: Corporate, Small Business, and Public. The Corporate segment serves the private sector business customers. The Small Business segment also caters to the private sector businesses but with smaller number of employees. The Public segment involves government agencies, education, and healthcare institutions. The company was founded in 1984 by Michael P. Krasny and is headquartered in Lincolnshire, IL.