Value Modeling and Calculation for Everything as a Service (XaaS) Based on Reuse

Value is the premier pursuing which drives a service implementation and dominates service selection. Added value will help to maximize the business profiting from existing service system centering positive reuse or redundancy reducing. In view of absence of a general calculating mechanism of service value which focus on added value in the XaaS (everything as a service), we firstly model XaaS in a multiple semantics background. Then we identified the critical target object for value computation. Hence after we propose a calculation mechanism of service value and added value for situations including data as a service (DaaS), information as a service (FaaS), composition scenarios, optimization and their mix with usage explanations. Ongoing complicated implementation which centers service contracts is outlined.