AdRoll gained traction by focusing on retargeting. It helped businesses show ads to users who had already visited their websites. You could say this strategy was key to its success. AdRoll also made it easy for companies to run cross-platform campaigns. They reached users on social media, websites, and through email. AdRoll’s easy-to-use platform helped attract small and medium-sized businesses. It offered tools that were simple to set up and use. Their customer support played a major role too. The company provided great support to help users optimize their campaigns. These factors contributed to AdRoll's growing popularity.