Infrastructure-as-a-Service

Infrastructure-as-a-Service (IaaS) is a complete IT infrastructure consumed as a service. Each user, or tenant, accesses a portion of a consolidated pool of federated resources to create and use their own computing infrastructure as needed, when it's needed, and how it's needed. The pooled infrastructure may be entirely owned and controlled by one organization (private cloud), may be created by joining and federating private resources with third-party resources (hybrid cloud), or may be entirely provided by a third party (public cloud).