Business plans are mostly about organizing, formalizing, and committing to a specific plan_of_actions. Such a document generally presents the objectives, strategies, analysis, and a detailed roadmap for implementation. Underlying a plan_of_action is comprehensive analysis of historic, current and proposed results all supported with assumptions. If anyone doubts the interest in business plans, a Google search returns more than 62 million and Amazon list more than 77꺜 titles concerning this subject.
Who is the ideal customer for this product or service? Really, ideas for business are a dime a dozen. You often hear people talk about a great business idea they have, but they rarely back it up with any kind of proof that a customer exists for such a product or service, and that that customer would be willing to pay. Try to be specific in profiling your buyer. For example, does your product or service cater to men or women, or both? What age groups or income levels does it service/attract? Are there any geographical areas that your product or service would supply?