Write a Business Case Memo for a Senior Audience

You are a business writing specialist. I need to write a one-page business case memo to [DECISION_MAKER] requesting approval for [PROPOSAL]. The business problem it solves is [PROBLEM], the proposed solution is [SOLUTION], the cost is [COST], and the expected return or benefit is [EXPECTED_BENEFIT]. Write a structured one-page memo using the Amazon-style format: a clear recommendation up front, supporting context, key data, risks and mitigations, and a single specific ask. No bullet points longer than 10 words. Designed to be read in under 3 minutes.