METHODS / DECISIONS AND OWNERSHIP / DECISION LOG

PRACTICE

Decision Log

A decision log is the shared record of material decisions for a team, project, or leadership group. It records what was decided, who had authority, why the choice was made, what it affects, and whether a later decision replaced it.

WHAT IT HELPS WITH

Leadership choices that cross functions. Budget, vendor, policy, launch, and scope decisions that may be questioned later. Policy exceptions that change how future cases should be handled. Anything a board follow-up depends on.

TYPICAL SCOPE Team
SETUP EFFORT Moderate
ONE MATERIAL LIMITATION

The log needs a clear materiality rule. Record the decisions people may need to execute, explain, review, or revisit, while leaving routine choices out.

WHAT IT IS

How a decision log preserves history.

A decision log captures the decisions people may need to understand, execute, review, or revisit later. Meeting notes may supply the source material, and a task tracker may carry the resulting work, but the log remains the place for the confirmed decision and its reasoning.

When a decision changes, keep the earlier entry and mark it as superseded. Create a new entry for the current decision and explain what changed. This preserves the history without treating a reasonable revision as a mistake.

A decision is never rewritten. It is superseded, and the trail stays readable.

FIT

When a decision log is useful.

Reach for it when

  • A leadership decision affects several functions.
  • The hiring sequence or organization design changes.
  • A budget, vendor, policy, launch, or scope choice may be questioned later.
  • A board or investor follow-up depends on a confirmed decision.
  • A policy exception changes how future cases should be handled.
  • Ownership may change before the consequences are fully known.

Use a different record when

  • The choice is a routine preference or a small task.
  • The idea has not become a decision yet.
  • The matter is a sensitive employee or legal issue and the record would be broadly accessible.
  • It is an emergency where writing first would delay action. Act, then record the decision afterward.

THE RECORD

What each entry should capture.

Include enough context for someone outside the original discussion to understand the current decision and act on it.

HOW TO SET IT UP

Create one reliable decision record.

01
Set a materiality rule.
Define which decisions deserve a permanent record. Apply the same rule across the team so routine choices do not crowd out material ones.
02
Choose one official home.
Choose one location for the leadership group and tell people where confirmed decisions will be recorded.
03
Name the authority.
Record who made or approved the decision and who contributed. This keeps authority clear when the decision is implemented or reviewed.
04
Capture promptly.
Write the final answer and reasoning while the context is still available. Ask the decision owner to confirm the entry.
05
Connect it to execution.
Link the decision to the affected projects, communications, and actions so the confirmed outcome reaches execution.
06
Preserve history.
Mark an old decision as superseded instead of silently rewriting it.
07
Review the log.
Check open conditions, expired assumptions, and pending follow-up on a defined cadence.

EXAMPLE

A launch-date decision.

Decision: move the enterprise launch from October 1 to October 15. Owner: the CEO. Reason: two required security controls remain incomplete, and leadership considers the exception risk greater than the cost of a two-week delay. Alternatives considered: launch to all customers, limit the first release to pilot customers, or delay. Consequences: Sales updates the forecast, Product changes customer communications, and the board receives a schedule note. Review trigger: reconfirm on September 29 if the security work remains incomplete.

This fictional entry gives future readers the decision, authority, reasoning, alternatives, consequences, and condition for review.

KEEP IT USEFUL

Common implementation and access considerations.

Common implementation issues

  • Logging so many small choices that the record becomes unusable.
  • Recording the answer without the reasoning.
  • Reconstructing the reasoning months later.
  • Maintaining several competing logs.
  • Editing an old entry until the original decision disappears.
  • Leaving the active decision unclear.
  • Recording a decision without connecting it to action.

People and access considerations

  • A written record can expose disagreement, reversals, and unclear authority. Use neutral language.
  • Restrict sensitive entries rather than watering the whole log down.
  • Allow a concise record of material dissent.
  • The decision owner should confirm the final entry before it becomes the official record.

AI AND JUDGMENT

Use AI to prepare the record. The decision owner confirms what became official.

AI can help

  • Draft a proposed entry from approved meeting notes or a transcript.
  • Extract the proposed decision, rationale, options, actions, and review conditions.
  • Find related entries and flag a possible conflict or superseded decision.
  • Draft links between the confirmed decision and affected projects or actions.

People remain responsible for

  • Confirming that a decision was actually made.
  • Verifying the decision, authority, scope, rationale, and effective date.
  • Setting the access level for sensitive entries.
  • Approving the official entry and any later supersession.

A convincing summary does not prove that a decision occurred. Off-record context, disagreement, or unclear authority may be missing from the source material.

SOURCES

What the guidance agrees on.

Documented professional practice

Decision logs are established practice in government, project, and technical work. The sources below consistently emphasize timely capture, clear ownership, rationale, and preserving the record when a decision changes.

View sources (4)OpenClose
AWS, the Architectural Decision Record process. Source, accessed August 29, 2026.
UK Health and Safety Executive, Key Decision Log guidance. Source, accessed August 29, 2026.
GOV.UK, Architectural Decision Record Framework, 2025. Source, accessed August 29, 2026.
European Commission, PM² project artefacts. Source, accessed August 29, 2026.

WHERE IT FITS

What this pairs with.

LAST REVIEWED: AUGUST 30, 2026 Every claim is checked against the source it names, and where the evidence does not support a claim we say so. Spotted a problem? Tell us and we correct it in the open.