Product : AppScale, Eucalyptus/Current, 4.4.5
Feature : VM Imaging, Compute, Infrastructure Services
Content Owner:  John Gallucci
Summary
Images (akin to AMIs and AKIs) can be created and shared with other cloud users. Existing instances can be saved into an image.
Details
http://docs.eucalyptus.cloud/eucalyptus/4.4.5/index.html#shared/image_section.html