Now the online store merchant can allow the online users to become an affiliate and earn a commission in return. Knowband offers Magento 2 affiliate and referral extension which implements affiliate functionality on the website. The online users can easily register as an affiliate and refer the store with their friends and relatives. In return, they can get an exciting commission. For more details visit here: https://www.knowband.com/blog/user-manual/magento-2-affiliate-referral-program-extension/