A. One of the layers in ORA is the Business Services layer that contains the SOA Services. It is these SOA Services that provide the connection between different technology perspectives; therefore the Business Services layer is the interlock between two or more technology perspectives.

B. Each technology perspective adds to the core ORA capabilities. The core ORA capabilities support each of the technology perspectives by providing a common foundation.

C. The vertical layers in ORA (Enterprise Development, Enterprise Security. Enterprise Management) provide the capabilities needed to combine two or more technology perspectives.

D. Each technology perspective is a separate reference architecture that leverages ORA as the common foundation for each of the individual reference architectures.

E. The vertical layers of ORA are identical for each technology perspective. Each technology perspective adds capabilities to the horizontal layers of ORA, especially the business Processes, Business Services, and Information Assets layers.