You have the best service or product in the world. The trouble is, nobody knows about it. How do you make more people know about your product today then they did yesterday? That's where marketing comes in.
Marketing is a broad term nowadays and it's easy to get confused by all the strategies and/or technologies you “should” or "can" be using to help your company grow. Many factors contribute to the success and growth of a business, but without marketing and sales (smarketing), a business has little chance of growth, exposure or success.
Companies continue to spend money on marketing because it matters to their bottom line. However, the amount each company spends differs according to a number of factors including: growth goals, revenue and industry.