Service-offering related metadata, and its aggregation for operational and billing purposes, is the key differentiator. “Service Engineering” would aptly descri

Service-offering related metadata, and its aggregation for operational and billing purposes, is the key differentiator. “Service Engineering” would aptly describe the application layers, with “Infrastructure Engineering” handling the underlying internal provisioning of those applications. Database management and network specializations also come into play, as well as the datacenter operations themselves (hardware provisioning and replacement, physical connectivity and other infrastructure). None of this includes the effort required to maintain a public-facing application front-end, though it is possible to access services via an external portal which spans more than one cloud provider.