Amazon has offered a the AWS VM Import service as part of EC2 for quite some time now, and for free, and has now rounded it out with a VM Export service. So the cloud is a two-way street again.

The import/export functions are part of the EC2 API Tools. The import tool allows virtual machines stored in VMware's VMDK format for its ESXi hypervisor, the VHD format used by Microsoft with its Hyper-V and Citrix Systems with its XenServer hypervisors, or RAW file format used by Red Hat's KVM hypervisor to be pulled into the EC2 cloud and converted to its native Amazon Machine Image (AMI) format.

The new export function can only expel VMs from the Amazon cloud in VMDK or VHD formats aimed at their respective ESXi and Hyper-V or XenServer formats. And according to a post by Jeff Barr, evangelist at the AWS unit, that export only works for Windows Server 2003 R2 and Windows Server 2008 EC2 instances at the moment. Amazon is looking for input on the matrix of VM formats and operating systems it should support with the export service. So give Barr an earful, especially about not support Linux from the get-go.
Matéria completa: Amazon lets you barf VMs out of EC2 ? The Register