http://pyramid.gogrid.com/
What is the Cloud Computing Pyramid?
The main premise behind the choice of a pyramid is to think about building a structure, where each layer is built upon the next, potentially, creating a larger whole. While each layer can be somewhat dependent upon each other and directly related, they do not require interdependence. In fact, each layer can, and does exist on its own. You can, for example, build a Cloud Application on top of a Cloud Platform or Cloud Infrastructure, but the building process primarily works from the ground up. The inverse is not possible (e.g., building a Cloud Platform on top of a Cloud Application). There are other ways to describe this hierarchy as simple layers or interconnecting circles, but those don’t necessarily convey the strength of the structure, or “infrastructure” in this case. We believe that the Cloud Pyramid encompasses this idea in a simple visual representation.
