This study examined the advancement of knowledge in service innovation research over the previous 10 years using a life cycle innovation process model that encompasses innovation creation, diffusion, and evaluation. The objective was to synthesize the current body of research and formulate suggestions for further investigation from the ISI Web of Science, 389 papers on innovation in service management and 175 articles about innovation in hotel and tourist management were analyzed for co-citations. Findings show that there is a significant difference between the two literatures. While service-dominant logic (SDL) and dynamic capacities were the main subjects of the service management literature (SM) study, innovation performance and measurement were the basis of the hospitality and tourism management literature (HTM) research. In reference to important subjects that have changed over the past 10 years, research from HTM has concentrated on cooperative innovation and information exchange, while research from SM has highlighted open innovation and value co-creation. A conceptual paradigm that bridges the two literatures is put forth, along with suggestions for further hospitality service innovation study.