Purposes of a business plan?

Contains both the qualitative and quantitative data and analysis for the proposed service; Provides analysis regarding the business case, feasibility, and projected financial impact; Facilitates the presentation of a concept of definitive proposal; Facilitates date-driven decision-making regarding a proposal or investment; Assists in the process or secure funding, whether the funding source is internal or external; Provides budgeting and resource allocation planning and evaluation metrics; Helps to facilitate consensus towards embarking on a new venture