Engineering standards
On this page 9 topics
Overview
Topics
- Standardization without unnecessary centralization
Learn first
3 h of practice (estimate)
Learning outcomes
- Decide which things to standardize (interfaces, security, observability) and which to leave to teams.
- Write standards as principles plus defaults plus documented exceptions.
- Drive adoption through paved roads and tooling rather than mandates.
- Retire standards that no longer earn their cost.
Lessons
Lab and exercises
Lab
SRA-012-LAB1 · Commerce standards
Outcomes: 1–4 · Time: ~1.5 h
- Choose three standards for Commerce 2030: API, events, and observability. Justify each with a recurring pain and the number of teams affected.
- Write each as principle, default, how-to-check, and exception process.
- Write an adoption plan for each: paved road or tooling, rollout order, and numeric adoption measures.
- Process one exception request from a role-played team, with a recorded decision and expiry.
- Add a retirement review date and criteria for each standard.
Acceptance: adoption measurable; one exception processed.
Exercises (case-based; six exercises)
| ID | Outcome | Task |
|---|---|---|
| SRA-012-EX01 | 1 | From a list of ten possible standards, pick the three with the best value-to-cost ratio and justify with the affected teams. |
| SRA-012-EX02 | 1 | A director proposes "all services in one language". Write a short reply that redirects to higher-value standards. |
| SRA-012-EX03 | 2 | Rewrite a mandate ("all services must log in JSON") as principle, default, and exception process. |
| SRA-012-EX04 | 3 | Design the paved road for the event standard: what the template provides and the adoption metrics you will publish. |
| SRA-012-EX05 | 2 | Review an exception request and write a decision with scope, risk accepted, owner, and expiry. |
| SRA-012-EX06 | 4 | Given a yearly table of five standards (exceptions, adoption, pain), decide keep, simplify, or retire for each. |
Show solutions
- EX01 Typical picks: API error and versioning format, event envelope, observability fields; they cross team boundaries and hurt operations most. Weak candidates: code style, internal layout.
- EX02 Say the pain is rarely language; name the real pain (incidents crossing services, inconsistent contracts) and offer boundary standards; revisit language choices only with data.
- EX03 Principle: logs are machine-searchable across services. Default: template logger emits JSON with agreed fields. Exception: a team documents why, with owner and expiry.
- EX04 Template emits trace context, log fields, and base metrics by default; CI checks conformance; dashboard shows percent of services conforming per team and reasons for non-adoption.
- EX05 Grant a narrow exception (different payload encoding, standard identity and trace fields kept), expiry three months, review with measurements; consider whether the default needs a fast path.
- EX06 Retire when the pain is gone or tooling automates it; simplify when many exceptions share a cause; keep when adoption is high and pain remains.
Outcome 3 is also covered by the lab adoption plan; outcome 4 by the lab review criteria.
Workplace evidence: a standard you authored that teams adopted voluntarily.
Quiz
Outcomes: O1 what to standardize · O2 principles, defaults, exceptions · O3 adoption through paved roads · O4 retiring standards.
A self-check for you: nothing is graded, saved or sent anywhere. Choose an answer, then check it. You can try again as often as you like.
Practical part
Six case exercises SRA-012-EX01 to EX06 plus the lab with three standards and one processed exception. Pass: quiz at least 8/10, and a standards review that shows measurable adoption, a paved road per standard, and a documented exception.
Common mistakes
Standardizing languages and frameworks first; standards with no tooling support.
Assessment
Standards review.
Workplace evidence
A standard you authored that teams adopted voluntarily.
Career relevance
Technology portfolio and governance (STF-003, STF-007).