Earners of this badge are AppNexus customers who have demonstrated foundational knowledge of the buy-side of the AppNexus platform. These individuals are able to navigate the platform and are ready to begin transacting media. The AppNexus Platform Certificate: Buy-Side Essentials is designed for buy-side customers new to AppNexus, new traders onboarding with existing AppNexus partners, and others who want to demonstrate essential buy-side platform knowledge.