The user.

Naturally, for the affiliate system to function it must be able to make sales. And the client or consumer is the person who is responsible for making them happen.

The affiliate promotes products or services to customers through the required channel(s) regardless of whether that is the blog, social media, or YouTube video and if the buyer regards that product to be important or useful for them, they will be able to click the affiliate link to purchase the item on the retailer’s site. If the buyer does buy an item, then the affiliate will receive a percentage of the profit made.