The document provides an overview and details of the EOSC Portal onboarding process for providers and their resources. The onboarding process has 3 phases - (A) registration of an authorized provider representative, (B) onboarding of the provider, and (C) onboarding of the provider's resources. Each phase involves multiple stages to register with the portal, provide required information, and get approval from the onboarding team. The overall process aims to register providers and make their resources publicly accessible through the EOSC Portal once successfully completed.