Glossary
The words this reference uses, in one place.
| Hand-off | An event one station writes and the next one reads. |
| Idempotency key | The order id, sent with every payment call, so the bank never charges twice. |
| Promise | The delivery day printed at checkout and shown on the tracking page. |
| Wave | A group of vans that leave the warehouse together. |
The glossary is also in the index.