Datacentre architecture - SSIS, SSAS & SSRS
I worked on a project for a very large financial organisation that effectively was building a private cloud SQL Server infrastructure. The end design was that you could got to a service portal and request a SQL Server, with options for a few different versions, licensing was not an issue due to their licensing agreement with Microsoft. You could choose small, medium, large or custom and then the environment where it would be built (dev ,test, QA or production etc). But then we had to make other architectural decisions about what to do with the other SQL Server components such as SSIS, SSAS and SSRS. The project owner made the decision that the database engine would be separate from any other components. This was a way of ensuring that something like SSIS didn't compete with the database engine for resources. We then needed separate builds for each component. The decision was then made that each component would have its own VM. This significantly increased the VM farm, but did make for easier deployment (and patching) and was more flexible than having multiple components on the one server. A very scaled out architecture that kept everything in different silos.