Conversion rate in affiliate marketing is the percentage of visitors to a website or landing page who respond to an affiliate marketing offer by taking the desired action. This action is usually to click on a link to make a purchase, sign up for a newsletter, or provide contact information. The conversion rate is the primary metric used to measure the success of an affiliate marketing campaign.For example, if an affiliate marketing campaign directs 100 people to a landing page and 10 of those people take the desired action (e.g. sign up for a newsletter), the conversion rate would be 10%. This means that 10 out of every 100 people who visited the page responded to the offer.Conversion rates can vary greatly depending on the product being offered and the type of audience being targeted. Different types of audiences will respond differently to different offers, so it is important to tailor an affiliate marketing campaign to the right audience in order to maximize conversions.