As a business we get a large chunk of our work through partner organisations who are looking to fulfil projects but they either have capacity shortfalls or lack a particular specialisation.
Recently we were asked to define our technical boundaries more formally and so started with a visual representation which is easy to understand at a glance.
As you can see, we’re a Microsoft shop from a technical point of view.
As our skill set grows with additional resources, so this technical boundary diagram will grow.