Body of Knowledge · Glossary
One-way door
A decision that is hard to reverse and so deserves deliberation and senior involvement. A two-way door, by contrast, is reversible and should be decided quickly by the people closest to it. When in doubt, treat a door as one-way until shown otherwise.
Where the standard develops it
- PL-1Delegation, ownership, and decision rightsMatching scope to capability, making authority explicit, not taking work back.
- TJ-1Evaluating architectural decisions and their organisational consequencesTrade-offs, reversibility, and who has to coordinate because of this.
- TJ-4Technical credibility and interventionStaying close enough to judge, and knowing when to step in.
Related terms
- Architecture review forum
- A standing forum where significant designs get cross-team scrutiny early.
- Decision process
- The usual way a manager of managers intervenes in a cross-team technical decision.
- Decision rights
- The explicit statement of who may decide what, and at which level of authority.
- Delegation brief
- The written form of a delegation for anything larger than a day's work: outcome, constraints, authority level, who else is involved, and when the work is next reviewed together.
- Executive docket
- The explicit, short list of technical decisions an executive owns personally because they cannot be separated from company strategy.
- Intent-based leadership
- Replacing "may I…" with "I intend to…".
- Intervention threshold
- Step into a technical decision when being wrong would be costly and hard to reverse (one-way doors, safety, security, data integrity, customer impact in flight).
- Inverse Conway manoeuvre
- Designing the organisation to produce the architecture you want, on the basis that the system will mirror the organisation's structure either way.
Cite this definition
Chicago, BibTeX and licence →Engineering Management Academy. (2026). One-way door. In Engineering Management Academy Body of Knowledge (Version 3.1, GLO.one-way-door). https://www.engineeringmanagement.academy/body-of-knowledge/glossary/one-way-door