Reviewing the subscription hierarchy and management groups

We learned in the previous sections how to split and associate costs according to your organization's needs. In this section, we will learn how to define a subscription hierarchy that matches as much as possible your company's finance operations, and we'll also introduce technical concepts that are relevant to the cloud optimization process, such as management groups.

As a rule of thumb, I have seen customers make the following choices over time, each of them changing and reverting to the other where possible, mostly due to the limits in charging each service:

• Keep all resources in the same subscription: It seems logical in the concept of a single virtual data center to keep billing all in one large bucket. Please keep in mind, though, that using one single subscription for all your resources has several limitations: in terms of technical resources being limited, and in terms of chargeback operations...