I treat memos as execution artifacts, not documentation artifacts. Strong memos narrow decisions, clarify risk, and assign accountability.
My baseline structure is stable: context, facts, options, recommendation, risks, and next decisions. If one section is weak, execution slows.
The long-term payoff is organizational memory: assumptions and tradeoffs are explicit, so future decisions are faster and lower-friction.
If a team repeats the same debate every two weeks, the issue is usually memo quality, not meeting frequency.