Affiliate marketing is a form of online marketing where an affiliate promotes someone else's product or service and earns a commission for every sale made through their unique affiliate link.

The process involves three parties: the merchant or seller, the affiliate, and the customer. The merchant provides the product or service, the affiliate promotes it through various marketing channels, and the customer buys the product through the affiliate's unique link. When a sale is made, the affiliate earns a commission, which is usually a percentage of the sale price.

Affiliate marketing can be done through a variety of channels, including social media, email marketing, blogging, and video marketing. The key to success in affiliate marketing is to choose the right product to promote and to have a strong marketing strategy to reach your target audience.

There are many affiliate marketing programs available, ranging from large networks such as Amazon Associates to smaller programs offered by individual merchants. Some affiliates specialize in promoting digital products such as e-books or online courses, while others focus on physical products like clothing or electronics.

Overall, affiliate marketing can be a lucrative way to earn passive income, but it requires hard work and dedication to build a successful business.