Defining architecture principles for multi-cloud

We'll start this chapter again from the perspective of the enterprise architecture. As we have seen, the Architecture Development Method (ADM) cycle in TOGAF is a guiding and broadly accepted framework used to start any enterprise architecture. In Chapter 2, Business Acceleration Using a Multi-Cloud Strategy, we learned that the production cycle for architecture starts with the business, yet there are two steps before we actually get to defining the business architecture: we have a preliminary phase where we set out the framework, and the, there's the architecture principles. These feed into the very first step in the actual cycle, known as architecture vision, as shown in the following diagram:

Figure 5.1 – The preliminary phase and architecture vision in TOGAF's ADM cycle

The key to any preliminary phase is the architecture principles; that is, your guidelines for fulfilling the architecture...