Software-defined data center (SDDC) (also: virtual data center (VDC)) is a vision for IT infrastructure that extends virtualization concepts such as abstraction, pooling, and automation to all of the data center’s resources and services to achieve IT as a service (ITaaS).In a software-defined data center, "all elements of the infrastructure — networking, storage, CPU and security – are virtualized and delivered as a service." While ITaaS may represent an outcome of SDDC, SDDC is differently cast toward integrators and datacenter builders rather than toward tenants.