Handbook
XP — major processes & flow maps
Iteration loop — Short iterations: plan a small story batch, build with pairing/TDD/CI, acceptance, demo with customer, retrospective; replan with what you learned.
1. Iteration loop
2. TDD micro-loop (within story)
3. Story lifecycle
4. Planning game (priorities vs estimates)
5. Phases A–F (XP locus)
| Phase | Typical XP locus |
|---|---|
| A Shape | Stories with customer; release themes |
| B Plan | Iteration planning; tasks |
| C Build | Pairing, TDD, CI |
| D Verify | Acceptance tests; collective ownership |
| E Release | Small / frequent releases |
| F Learn | Production feedback; retrospective |
6. Flow details (walkthrough)
Iteration loop — Short iterations: plan a small story batch, build with pairing/TDD/CI, acceptance, demo with customer, retrospective; replan with what you learned.
TDD — Red (failing test) → Green (minimal code) → Refactor (keep tests green); repeat within the story so design stays test-guided and CI catches regressions.
Story lifecycle — Acceptance tests agreed before implementation define customer-visible done; then implement with unit tests and green CI; customer acceptance closes the story.
Planning game — Customer orders by value; team estimates; pull stories until capacity fits. If top value does not fit, split, defer, or negotiate scope explicitly.
7. Authoritative sources & further reading
- Wikipedia — Extreme programming — Stable overview of practices and history.
- Agile Alliance — Agile glossary — Shared vocabulary.
- Ron Jeffries — XP — Practitioner site.
- Martin Fowler — XP (Bliki) — Short expert summary.
- Wiki.c2 — Extreme Programming Roadmap — Classic wiki index of XP topics.
Full curated list: External reference URLs (methodology guides).