Lean business planning simple but powerful way to get what you want from your business. Get focused, grow faster, and adjust to change. A lean business plan is an easy and practical way to align strategy, tactics, milestones, assumptions, and essential cash flow without the fuss of a full business plan. It's not a business plan document. It's just bullet points and lists and tables. Keep it short and review and revise monthly in just an hour or so. It's planning that matters, the process - not the plan.