The portal network is a central architectural component of Germany's e-government strategy, anchored in the OZG. It enables users to access all digitized administrative services through any connected portal, regardless of which authority is responsible. Technically, the portal network is based on standardized interfaces, a federated identity management system, and common data transfer protocols. Once authenticated, users navigate between federal, state, and municipal portals without re-logging in. The federal portal bund.de and state portals are already partially interconnected. The portal network is essential for digitally mapping Germany's federal administrative structure.