This white paper presents a technical implementation model and architectural patterns identified for Europe’s Cloud-Edge-IoT (CEI) market. In this white paper, the UNLOCK-CEI team examines each of the Considered Use Cases through a detailed structural analysis methodology. Each use case is categorised according to its possible architectural approaches for implementation, and common service requirements are identified for key architectural patterns. In total the original 63 Use Cases presented in D1.2 have been expanded to a list of 79 Use Cases and Use Case Solutions, which form the “Considered Use Cases” that are the foundation of this analysis.