Five fields, two minutes per entry, and the call you made eight months ago is still defensible when a new sponsor walks in.
Five-field core (date, decision, options considered, rationale, owner) plus three optional fields (consulted, reversal criteria, review date) for the calls that warrant them. 14 worked entries across real program scenarios.
Auto-view that surfaces entries due for their 30, 60, or 90-day check. Quality scorecard rates each entry on clarity of options, OKR tie, and whether the reversal trigger was actually defined.
Strategic (high ceremony, deep entry), operational (light ceremony, short entry), escalated (when the call exceeds your authority). The cheat sheet covers when each one applies.
The 48-hour rule, the five failure modes with fixes, a worked entry, and the director move (tie every decision to an OKR or charter goal).
One purchase, yours to keep. Use it on every program, customize for your team. Works in Excel and Google Sheets.
Halfway through a program I was running, a senior director joined a steering meeting and asked, with apparent earnestness, why we'd chosen vendor A over vendor B. The room went quiet. Six of us had been part of the decision. It had been made eight months earlier. None of us could defend it on the spot.
We lost a week reconstructing the answer. The team lost faith in itself for slightly longer. That program is the reason I keep a decision log.
"Decisions don't take care of themselves. Programs that act like they do end up making the same decisions twice. Or three times. Or five."
Most PMs resist logging decisions because it feels like make-work. The decision is fresh, everyone remembers it, why write it down? The answer is that "everyone remembers it" decays at a rate most PMs don't appreciate. Six months later, half the room is different people. A year later, the original sponsor is gone. Two years later, the decision shows up in a strategy review and nobody knows why it was made.
The format is short. Five fields. The whole entry fits in a paragraph.
That is the whole core. A four-sentence record of a decision is worth a thousand times more than a perfectly remembered version of the decision in the PM's head, because the four-sentence version survives org changes, sponsor changes, and the PM's own forgetfulness.
Decisions made in service of an outcome are durable. Decisions made in service of nothing in particular are perpetually re-litigable. A decision entry that says "we chose vendor A because they had the lowest TCO" is a decision in search of an objective. A decision entry that says "we chose vendor A because lowest TCO directly serves OKR Q3-2: reduce platform run-rate by 25%" is a decision anchored to something.
When the OKR shifts, the decision can be honestly revisited. When the OKR holds, the decision holds. The OKR is the load-bearing wall. The decision is what's hanging on it.