Tl;dr: [optional] 1-liner if the context of the change is long

Context:

Few sentences on the high level context for the change. Link to relevant design docs or discussion.

This Change:

What this change does in the larger context. Specific details to highlight for review:

• highlight1
• highlight2
• highlight3

Test Plan:

Go over how you plan to test it. Your test plan should be more thorough the riskier the change is. For major changes, I like to describe how I E2E tested it and will monitor the rollout.