Example: contracts between teams without the bureaucracy

A simple interface mindset for hand-offs: explicit inputs, outputs, and what “done” means.

23 January 2026 · Archive

Example content

Fictional scenario for demonstrating tags and archive grouping.

When two teams share a boundary—APIs, data pipelines, or design systems—misunderstanding usually comes from implicit expectations. A one-page contract is enough if it answers four questions.

Four questions

  1. What do you consume from us?
  2. What do we guarantee (latency, freshness, breaking-change policy)?
  3. How do we communicate changes?
  4. Who is on point when something breaks?

Treat the contract as a living note in the repo, not a signed treaty. Update it when behaviour changes, and link it from runbooks.