Service science research has been developing rapidly in this decade and provided a lot of contribution to enhance value of information systems. Most of IT engineers and scientists are promoting researches based on the concept what information systems make an effective, an optimal, and comfortable society. Since the e-services are provided to users, we need to define their values on user-friendliness, sustainability, economical efficiencies, effectiveness, satisfaction, and some other viewpoints. In this talk, I introduce the service fit model to realize what the users utilities are enhanced by e-services. The former half, we discuss the irrational issues of human activity and thinking. Even though some splendid services are provided by the information systems, people sometimes do not think the service is valuable because their thinking and services are not matched. In latter half, I introduce some examples and actual cases where the systems provide smart services and functions. IT solutions in tourism industry and semiconductors industry are introduced in end of this talk.