How do XRs work?
An XR can do two things under the hood. The first purpose is to combine related Managed Resources (MRs) into a single stack and build reusable infrastructure template APIs. When we do this, we might apply different patterns, such as shared resources between applications or cached infrastructure for faster provisioning. The second one is to expose only limited attributes of the infrastructure API to the application team after abstracting all organization policies. We will get into the details of achieving these aspects as we progress in this chapter. The following are the critical components in an XR:
- Composite Resource Definition (XRD)
- Composition
- Claim
Let’s start looking at the purpose of each component and how they interact with each other.
XRD
The XRD is the schema defining the infrastructure API specification. It is best to describe an XRD first. Fixing the API specification first will force us to think about end users’...
