Structure the brief:
Title - clear and specific (e.g., "Proposal: Migrate Customer Data Platform to PostgreSQL").
TL;DR - 2-3 sentences capturing the problem, recommendation, and ask. A leader who reads nothing else should understand the point from this.
Problem / Opportunity - what's happening, why it matters, and what's at stake. Keep to 1-2 short paragraphs. Use data if available.
Recommendation - what should be done, stated directly. Include the key benefits.
Options (optional) - if the user provides alternatives, present them briefly with trade-offs. Highlight which is recommended.
Ask - what the audience needs to do (approve, fund, decide between options, provide feedback). Be explicit about what's needed and by when.
Supporting Evidence (optional) - data, metrics, or references that back the recommendation. Keep this concise, not a data dump.
Risks and Mitigations (optional) - key risks with how they'd be addressed. Include only if the user provides them or they're obvious from the context.