Background: The aim of the SCUBY project was to provide evidence on the scaling up of an Integrated Care Package (ICP) for type II Diabetes (T2D) and hypertension (HT) across three distinct health systems (Cambodia, Slovenia, and Belgium) through the development and implementation of country-specific roadmaps for a national scale-up strategy. Harnessing mixed-methods research and stakeholder engagement informed the development of country-specific “living” roadmaps. Here, we aim to extract the different elements that make each country-specific roadmap, identify cross-country similarities and differences, and identify lessons learned. Who is it for? The make-up of the different roadmaps, and the shared learnings in developing these roadmaps will be of interest to academic and non-academic stakeholders involved in the scale-up of complex health interventions, including integrated care. Who did you involve and engage with? Stakeholder mapping and engagement included beneficiaries of integrated care, implementers, healthcare workers, academics, and policy makers. Extensive reflection took place between the consortium members driving the SCUBY roadmap work package, which included the various country-specific leads, to identify cross-country learnings. What did you do? Qualitative content analysis was used to derive key roadmap elements from key SCUBY documents (n=20) including policy briefs, consortium meeting notes, interim reports, amongst others. Subsequently, the roadmap components were mapped against the ten core roadmap components as proposed by Weber et al. (2022). What results did you get? The content of the three roadmaps differed according to priority needs and position of the change team in the country. The Cambodian team recognised the need of wider coverage of the proposed ICP, and the need to improve quality of the current implementation. The roadmap comprised quality improvement measures, referral pathways, and strengthening monitoring systems. The Belgium roadmap comprises three themes: primary care ...