This chapter shows a systems technologies framework to lead the approach to design information service system architecture standing on the systems concept. It also presents application examples for building smart public infrastructures. Moreover, it shows that a systems concept, autonomous decentralization, gives a consistent design approach for the reference architecture, the concrete architecture, and the implementation. The presented service system provides an autonomous process for a service receiver to get valued information changing the state of the receiver. The example of the service system provides, recursively, the information to see in smart public infrastructures (MIERUKA in Japanese) for rapid decision making among stakeholders in the business process.