"Ring two is designed to give people a vision of everything that needs to be in the box for the effective playbooks to execute against what you've established in ring one. You have to nail ring one first. That unlocks ring two, which unlocks ring three."
Why it matters
The rings enforce sequence. Most CS organizations try to start in Ring 2 (build playbooks, set up tooling) without ever locking in Ring 1 (what outcomes the customer is actually trying to achieve). The result is a beautiful operational machine that doesn't drive retention.