Cloud@Customer—This private cloud option entails building clouds within a customer-provided infrastructure, which may involve cloud technology offered by VMware, Citrix, Openstack, Microsoft or IBM, for example.
 

Cloud@Cognizant—This involves Cognizant-hosted and managed best-in-class data centers that offer dedicated private cloud infrastructure and multi-tenant cloud infrastructure.
 

Cloud@Partner—Here, the infrastructure is provided by a third party that may rely on public or private cloud technology offered by Amazon Web Services, Windows Azure, Salesforce.com, Workday, Rackspace or IBM Smart Cloud.