A note on versions:The version presented here may differ from the published version or, version of record, if you wish to cite this item you are advised to consult the publisher's version. Please see the 'permanent WRAP URL' above for details on accessing the published version and note that access may require a subscription. Design/Methodology/Approach -The paper uses a longitudinal case study approach to gain an understanding of what and how Singapore Airlines (SIA) sustained service innovation for over 30 years. The study uses triangulation, whereby the core data from in-depth interviews with senior and middle management, and frontline employees were complemented with academic research, case studies, annual reports, observations, and archival documents. 240 single-spaced pages of interview transcripts with over 130,000 words were analyzed and coded using MAXQDA for identifying repeated patterns of meaning.Findings -We identified three key institutional foundations for service innovation: (1) innovation climate (i.e., leadership and service culture), (2) human capital (i.e., recruitment, training and development, and engagement and incentives), and (3) resource configurations (i.e., systems, structure, and processes). These foundations enabled the organization to build the following four service innovation-related dynamic capabilities: (1) embrace ambidexterity, (2) institutionalize learning and knowledge integration, (3) orchestrate collaboration, and (4) reinvent customer value. Interestingly, these institutional foundations and capabilities remained largely stable across 30 years; what changed were the contexts and specifics, not the foundations and capabilities.Research Limitations and Implications -Data were collected only from one company. Due to the method of thematic analysis the generalizability of our findings needs further