enStratus is a US company offering a cloud management platform that brokers different public and private Infrastructure-as-a-Service (IaaS) and Platform-as-a-Service (PaaS) cloud architectures, including Amazon EC2 and S3, Eucalyptus, GoGrid, Rackspace, Cloud.com, ReliaCloud, Terremark, Microsoft Windows Azure and even the brand new Google Storage for Developers.
The product arrives as a 3-tier application that can stay hosted on enStratus servers or running on-premises inside the cloud infrastructure. The components are: the credentials system, the provisioning system and the console.