Affiliation services refer to a business model where companies or individuals form partnerships to promote each other's products or services. In this arrangement, one party, known as the affiliate, earns a commission for driving traffic or generating sales for the other, called the merchant. Affiliation services typically involve the use of unique affiliate links or codes to track referrals and ensure proper compensation. This marketing strategy is widely employed in e-commerce, online retail, and digital marketing ecosystems.

It offers a cost-effective way for merchants to expand their reach, while affiliates benefit from earning income through successful referrals. The success of affiliation services relies on transparent communication, mutual trust, and effective tracking mechanisms to accurately attribute conversions and compensate affiliates.