AdRoll and Perfect Audience have key differences. AdRoll offers more advanced features for cross-platform retargeting. It allows businesses to run ads across websites, social media, and email. Perfect Audience, however, focuses mainly on display ads and retargeting across websites. AdRoll has a wider range of integrations with e-commerce platforms and analytics tools. Perfect Audience offers a more straightforward interface, making it easier for beginners. AdRoll also provides more customization options for campaign targeting. Perfect Audience is often seen as a simpler, more cost-effective solution for smaller businesses. Both platforms specialize in retargeting, but AdRoll offers more advanced tools.