To support shared decision-making (SDM), in- itiatives are often focussed mainly on communication in the en- counter and the use of decision aids. Our previous research (Griffioen et al. Cancer Med 2021) revealed: decision-making as a sequence of (un)planned moments before, during, after the con- sultation; work for patients and relatives to acquire/understand/re- call information; often unclear roles and tasks, and unexpected energy drains (due to, e.g., changes in the trajectory). We aimed to develop a service design methodology to improve SDM. The entire patient journey is considered a service. All ‘touch points’ (leaflets, devices, etc.) become parts of a consistent service, supporting stakeholders’ decision making. We used oncology as a case.@en