Abstract: Example systems and methods for serving product recommendations for key performance indicator (KPI) optimization are described. In one implementation, a method selects at least a first item from a set of items such that a first performance indicator among a plurality of performance indicators is improved as a result of a user purchasing the first item in response to viewing at least the first item on a webpage of a website. The method also displays a graphic or textual representation of at least the first item on the webpage as a recommendation to the user.