Cloud Computing, 2nd Edition

Design Is a Give-and-Take Process

Designing a system is challenging. Budgets and time constraints mean you cannot solve every problem. That said, you need to consider the common design issues and then help the stakeholders prioritize the solutions they desire. As you evaluate your system’s nonfunctional requirements, remember the 80/20 rule (often, 80 percent of a program’s processing takes place within 20 percent of the code). You will want to focus your system design on the issues that will produce the greatest impact for the stakeholders.

Designing for Accessibility

Depending on the processing a system performs, a designer may need to create an interface that maximizes user access or may have to lock down the system and control when users ...