This is a presentation of the Amazon Web Service compatible EC2 interface to CloudStack. AWS EC2 is the de facto standard for compute clouds whether they are private or public. EC2 has a multiple client libraries and tools that can be used to provision virtual machine instances. In this talk we walk through how to enable an EC2 like service in a CloudStack based cloud, how to register the users and how to use clients to talk to CloudStack the same way you would talk to the AWS EC2 public clouds.