Applying ICT to assist daily activities and interests is already a worldwide trend. Through software and network techniques, computers could remotely provide various services. Up to now, Service-Oriented Architecture (SOA) has become one of the most popular techniques to realize these daily services in various areas. Therefore, we would need systematic methods for services creation from a service-centric viewpoint. In this paper, we first illustrated the progress of service realization. The interoperability of service creation and realization along its life cycle were carefully explained. With methodical sequences, domain-specific services can be well created and designed. The home-care services were demonstrated in the case study. These services were verified by a pilot trial in a real environment. The experimental results showed the usability and effectiveness. We believe that a successful experience on service realization is worthy to be shared.