Supply path optimization is a way to choose the most direct and efficient route to buy ad space. In simple terms, when you buy display ads through a DSP, your ad can go through different middlemen before it reaches a website. Some paths cost more or bring lower quality traffic. Supply path optimization helps you cut out the extra steps so your ads get better placements at lower prices. This means your budget goes further, and you’re less likely to waste money on bad traffic. For affiliates, this can lead to more conversions and higher profits. It's something worth checking if you notice you're spending a lot but not getting good results. Have you ever looked into how your ad traffic flows?