Software Development Decision Log
This is a practical guide to building a decision log for a software development project — a record of the key decisions made, by whom and why, adapted to the realities of building and shipping a software product or feature set.
What a Decision Log is
A decision log is a record of the key decisions made, by whom and why. For the full concept and how it works in general, see Decision Log. On a software development project it plays the same role, tuned to this kind of work.
Why it matters for a Software Development project
Software Development projects live or die on building and shipping a software product or feature set. A well-built decision log gives the team a shared, explicit reference for exactly that — reducing ambiguity, aligning stakeholders, and making problems visible early enough to act. Skipping it, or doing it generically, is how software development projects drift into avoidable delay and cost.
What to include
- Decision
- Date and owner
- Rationale
- Alternatives considered
- Impact
Software Development-specific considerations
Tailor the decision log to the risks that most often derail software development projects:
- Scope creep
- Technical debt slowing delivery
- Third-party dependency risk
Example
On a real software development project, the decision log would be shaped by building and shipping a software product or feature set. In particular, it should explicitly account for the project’s biggest risks — scope creep, technical debt slowing delivery, third-party dependency risk — rather than treating them as afterthoughts.