Thanks for sharing

What I am looking for is more at a data centre level I guess that maps the infrastructure to the services provided. For example, Service 1 uses Server A and Server B. Service 2 uses Server B and Server C.

Then, once you have everything mapped out, it is easy to see when planning what services would be impacted if we wanted to upgrade Server B to a new operating system. We would know that we need to check compatibility for both Service 1 and 2, and not just focus on Service 1 and be reminded that Service 2 uses the same server only when something goes wrong!