The document discusses Spain's use of the TESTA network to connect its national administrative network RedSARA to the networks of European Union institutions and other member states. Some key points: - RedSARA connects Spanish public administrations, and its connection to TESTA allows integration with EU services and other member state administrations. - Connecting to TESTA helped Spain overcome challenges and participate in pilot experiences and migrations of the TESTA platform. - The connection allows Spain to integrate into at least 21 cross-border services across 18 sectors like interior, justice, and social security.