This chapter outlined the patterns for NFRs, providing insights into architectural patterns and their impact on NFRs. The chapter covered all the key tiers/layers that are critical for any project and described various patterns pertaining to the business, database and integration tiers. It also covered the impact of the patterns on various NFRs. This chapter also described the trade-offs between various NFRs and the best practices to be applied on engagements.

This next chapter deals with the measurement of NFRs. It outlines four methodologies for NFR monitoring and measurement. This includes sizing, analytical modelling, quality assurance, and monitoring and management. It also describes, in depth, the approach for monitoring and measuring NFRs.