The main process: from need to live

What are the stages?

1. S0 Need: the need is written down.
2. S1 Plan: the task waits for a seat in the plan.
3. S2 UI agreed: the screen is agreed before code.
4. S3 Code: the change is built.
5. S4 Test: automatic tests pass.
6. S5 Review: another reviewer passes it (alongside S4).
7. S6 Land: the change lands in the main code.
8. S7 Cut and acceptance: a release candidate is cut and passes its tests.
9. S8 Develop merge and regression: merged for the release and tested again.
10. S9 Human acceptance: a person tests it on a test machine, one piece at a time.
11. S10 Deploy hand-off: handed over for the live roll.
12. S11 Live: the change runs live.

How are times and waits measured?

Each stage has a moment it starts and a moment it ends, both from real events. A wait is the time before someone takes the work up; work is the time after.

Where one end has no real event, the time is not measured. Amphora Ops never fills a gap with 0 or an estimate, so every number you see happened.