Certified eBay Solutions Provider
When choosing a third-party eBay applications or hosted services, you can verify the application works with the eBay platform by checking for eBay certified logos. Applications (or Web sites) displaying the Certified eBay Solutions Provider logo have met a higher level of certification than those verified as an eBay Compatible Application. Certified Providers are screened and eBay requires that these developers have extensive experience with eBay, pass a strict certification exam and provide a number of proven customer references.
See also eBay Compatible Application.