The main difference between Apollo, a marketing automation platform, and Pardot, a CRM platform, is the primary focus of each platform. Apollo is designed to help businesses automate their marketing efforts and manage lead generation, while Pardot is a customer relationship management platform that enables businesses to manage and track customer interactions across various channels. While both platforms offer some marketing automation capabilities, they differ in their functionality and approach to lead nurturing. Apollo focuses on lead scoring and management, automated email campaigns, and targeted messaging, while Pardot offers more comprehensive marketing automation features, such as social media marketing, landing page creation, and personalized communications. Ultimately, the choice between the two platforms depends on the specific needs and objectives of the business.