Fantastic article by Johan Den Haan:
In this article I will explain this framework. I will also explain how I
constructed this framework, give some example technologies/solutions for
each cell of the framework, and show how this framework can be used to
compare some of the popular cloud platforms (e.g. OpenStack, AWS, Heroku,
Not only does it provide good details about Database-as-a-Service and even Business Analytics Platform-as-a-Service, but it also shows how these are higher building blocks of object storage and software defined storage.
Original title and link: The cloud landscape described, categorized, and compared