Architecture Quality Attributes

Intro

• Qualities that must be accommodated in a systems architecture over and above basic functionality.
• Categories of quality attributes:
  • Observable attributes. e.g:
    • Performance
    • Usability
    • Functionality
    • Security
    • Availability
  • Unobservable attributes. e.g:
    • Modifiability
    • Reusability
    • Testability
    • Portability
    • Certifiability
  • Business attributes.e.g:
    • Time to market
    • Overall cost
    • Longevity
    • Backward compatibility