Amazon has released the AWS System Manager for Microsoft System Center Virtual Machine Manager (SCVMM). AWS System Manager is an add-in for SCVMM which allows customers to monitor and manager EC2 instances from within SCVMM. This add-in adds functionality to SCVMM like launching new instances, and common maintenance tasks like restarting, stopping and removing instances. Also connecting to an instance using the Remote Desktop Protocol (RDP) is possible.
The add-in is available for free, customers need to provide their IAM credentials to connect to the EC2 instance.
Besides this add-in for SCVMM, Amazon also provides a Management Pack for use within System Center Operations Manager (both version 2007 R2 and 2012/2012 R2).