We study the evolution and dominance of the service based functions and their distinguished features. As the service industry matures, intense machine interaction, knowledge intensive services has become an essential requirement issues for the customers. In this speech, We discuss wide range of interconnected topics, emphasizing the multi-faced nature of service functions. We argue that by proper 'humanization and personalization' of interactive system and by the use of teams of computer supported professionals, we can provide the knowledge service universally accessible for any customers.