Prioritizing Service Functions with Non-Functional Requirements

Abstract

The early stage of service development primarily has two design phases: acquiring demands/constraints and determining delivering functions. The latter phase is significant in bridging the gap between design and implementation, as service providers in the IT industry have struggled in determining an appropriate combination of functions: IT-enabled functions and practitioners’ activities. This paper focuses on nonfunctional requirements (NFR), and quantifies the value of respective combination of service functions from NFR perspectives by clarifying the relationships between NFRs, qualities and functions. Case studies on educational services show that the approach will provide us with a basis for determining respective function priority.