You need to learn about the people interested in your product or service. For example, if older people enjoy your products or services, you'll need to market to them instead of using marketing methods that target a younger audience. It'll be impossible for your product to take off if you don't show it to the right people. The easiest way to tell who would be interested in your products or services is to look at your business competitors. Pay attention to the people who buy those products and figure out what they like. After you narrow down your target demographic, it would be best to host interviews with these people so you can hone your business plan.If you run an online start-up, it'll be easier to identify your demographic because you can keep track of the people who buy your products. Many companies use Google Analytics to identify their target audience and market to them. It'll break your target audience up into percentages so you can see which demographics have the highest interest in what you provide.If you spend too much time marketing to the wrong audience, your sales will hurt. You don't want to waste time and resources advertising your products and services to people who don't care. On the other hand, some people won’t benefit at all from what you have to offer, and you need to realize that before you start your marketing campaign.