AdRoll is a digital marketing platform that helps businesses reach their target audiences through online advertising. It specializes in retargeting, which means showing ads to users who have previously visited a company's website. This approach aims to remind potential customers about products or services they showed interest in, increasing the chances of conversion. The platform offers various tools for managing campaigns across different channels, including social media and display ads. AdRoll also provides analytics to track performance, allowing businesses to optimize their advertising strategies based on data-driven insights.