Affiliate marketing is the process by which an affiliate earns a commission for marketing another person’s or company’s products. The affiliate simply searches for a product they enjoy, then promotes that product and earns a piece of the profit from each sale they make. There are two ways to approach affiliate marketing: You can offer an affiliate program to others or you can sign up to be another business’s affiliate. 
Affiliate programs can increase your sales with no upfront cost to you. It just takes a little time to plan your strategy and select the partners that will have the greatest impact on your business.