Purpose – This paper describes how the city of Tampere in Finland developed its knowledge-based management, organized its strategic knowledge management and systemized its knowledge-based decision-support. Design/methodology/approach – Theoretical background of the paper is on strategic knowledge management and public management. The main empirical data was gathered in an intense action research process, which was carried out between December 2013 and January 2014. This process included three development workshops and several preliminary and follow-up discussions where workshops were planned, analyzed and iterated. As secondary data, strategy documents, reports from previous development initiatives and the key findings of a maturity analysis on the state of knowledge-based management were used for mapping the starting point of the development work. Originality/value – The paper contributes with its holistic perspective to public knowledge management and by providing empirical illustration on the strategic knowledge management at the city level. The literature has pointed out the narrow focus of earlier approaches. Their focus has been, for example, on the role technology and e-government or in some specific branches of public service provision. Practical implications –The paper lays a foundation for developing a knowledge-based management culture in public organizations. Simultaneously, it puts in evidence the central role of the municipality and its knowledge management in fostering the vitality of the wider service ecosystem. Without proper knowledge and understanding about the efficiency and effectiveness of service operations, service providers and ways of organizing it is not possible to make informed decisions.