An affiliate link is a unique URL given to an affiliate marketer. This link tracks sales or actions made through it. Companies use affiliate links to identify which affiliate brought in a customer. You get a commission when someone uses your link to complete a purchase. The link usually contains a special code for tracking purposes. Businesses share affiliate links to promote their products or services. Marketers share these links on blogs, social media, or email campaigns. The purpose of the link is to drive traffic and generate sales. Affiliate links make it easy to measure marketing performance and earnings.