Good question. Prosspero's aime is to identify TM Forum developed interfaces which have been proven in the industry. (E.g. There is at least one live deployment, and a Service Provider who is willing to provide a testimonial on that deployment.), and package them with useful materials to facilitate rapid, simple, and less expensive deployments. As such, we package an interface with both technical materials (downloadable Reference Implementations, TCK's, tools, etc.) and business materials (Testimonials, Case Studies, Certified Products, Collateral, etc.). Our hope is that the packaging of these materials will influence both technical and business decision makers to use Prosspero-approved interfaces.