There’s not a lot of difference between a one-page business plan and a good executive summary, but a benefit of the one-page business plan is it can communicate your business idea very greatly.
Also, keep in mind that a business plan is a living document and you can always start with a one-page plan and enlarge it with additional detail as required. You may be able to articulate the business overview, vision, objectives, and concise action items on a single page, but you might want more detail in the financial and marketing sections.
After getting started with upmetrics, you can copy this one-page business plan template into your business plan and modify the required information and download your one-page business plan pdf. It's the fastest and easiest way to start writing a business plan.
Source: https://upmetrics.co/template/one-page-business-plan