Explanation/Reference:
B: The horizontal layers illustrate that upper layers build upon or use the capabilities of lower layers.
Examples: Shared Infrastructure, Information Management, Information Assets, Application Infrastructure C: Layers depicted vertically are orthogonal to the horizontal layers and apply across the entire platform, working in conjunction with horizontal layers to provide a complete solution.
Examples: Enterprise Development, Enterprise Security, Enterprise Management Note: In order to promote modularity and encapsulation, an architecture will usually be divided into layers.
Each layer has a specific purpose and leverages technologies, standards, and products designed specifically to address that purpose. Layers generally build upon the layers below and provide benefits and capabilities to the layers above.
The ORA diagram in the figure below illustrates the many aspects of enterprise computing in the form of horizontal and vertical layers