IoS-Based Services, Platform Services, SLA and Models for the Internet of Services

The Internet of Services (IoS) embraces new business and technological models that can radically change the way day-to-day services are provisioned and contracted. Within the IoS, services which were traditionally not created based on an established science and operated without a systematic approach, will be digitalized using proper methodologies, standards, and tools. The digital specification of services will enable their trading over the Internet using electronic marketplaces. This paper provides four main contributions to the IoS research: a definition and characterization for the concept of IoS-based service, the role and importance of platform services for the IoS, the challenges of managing SLA dependencies between IoS-based services in compositions, and a model-based approach for service engineering that can be used to design IoS-based services.