Glance is a server that provides the following services:
Ability to store and retrieve virtual machine images
Ability to store and retrieve metadata about these virtual machine images
FUTURE: Convert a virtual machine image from one format to another
FUTURE: Help caching proxies such as Varnish or Squid cache machine images
Communication with Glance occurs via a REST-like HTTP interface.
However, Glance includes a Client class that makes working with Glance easy and straightforward.
As of the Cactus release, there are also command-line tools for interacting with Glance.
