Affiliate/Partner program – marketing instrument for uplifting sales and mass sharing of the product.
Affiliate link – usually those are links, which are added to site code or another resources (applications, blogs, social networks and others). There’s also a capability of affiliate widgets, that allows you to integrate referral code into your website.
SaaS Reseller Program is a type of partnership where a merchant offers funds to partner for each sale he refers.
White Label Program is a kind of partnership where partners rename vendor’s white-label plugins and sell them to their audience.
Affiliate tracking is transactional analytics for every client who clicked on your referral links. Usually it is shown in your partner admin panel.