The purpose of the Marketing Plan is to identify and create competitive advantage. Marketing planning is the real form of the company to provide a strategic response to a changing global competition pattern consisting of: business size adjustments, changes in product and market scope, creation of new networking relationships with other organizations.
What's the relationship between your marketing plan and your business plan or vision statement? Your business plan spells out what your business is about--what you do and don't do, and what your ultimate goals are. It encompasses more than marketing; it can include discussions of locations, staffing, financing, strategic alliances and so on. It includes "the vision thing," the resounding words that spell out the glorious purpose of your company in stirring language. Your business plan is the U.S. Constitution of your business: If you want to do something that's outside the business plan, you need to either change your mind or change the plan. Your company's business plan provides the environment in which your marketing plan must flourish. The two documents must be consistent.