Appendix B. Non-Functional Behavior

Whether it is the design of products, integration capabilities, or solutions, more focus is typically given to functional behavior rather than non-functional behavior. A design with less focus on non-functional behavior can cause the entire initiative to fail. In other words, in IT solutions, non-functional aspects should be given equal importance to functional aspects.

This appendix covers some more detail on the non-functional requirements covered in Chapter 7, “System Characteristics.” They include:

• Reliability and availability

• Performance efficiency

• Compatibility

• Maintainability

• Security

Reliability and Availability

Availability is a measure of the time a system or component is available for ...

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