Research activities setting the conceptual frameworks were carried out. The innovative concepts and tools were adapted to the cities and finally introduced in the CLs. SUMP Implementation Strategies/Transition Pathways concepts were applied in Klaipėda, Alba Iulia, Platanias and Manchester. The framework concept of cross-sectorial links was applied in Manchester (health sector), in Alba Iulia (tourism) and in Platanias tourism), as one of the actions supporting the definition of SUMP vision/objectives/targets and implementation strategy. The identification of new solutions for mobility was part of CL in Alba Iulia, Lucca and Antwerp. The framework concepts of partnerships and business models were introduced in Klaipėda, Alba Iulia, Antwerp and Lucca. All cities applied the innovative engagement tools,engaging with local stakeholders and organising a number of events to support the achievement of the objectives of their CLs. The City Lab activities were deeply affected by COVID-19 emergency that forced cities to re-prioritize the city needs and the measures to be considered in SUMP implementation. The cities were guided in the assessment of good practices/lessons learnt as well as in the analysis of the barriers and drivers encountered during the development of the activities. An analysis of recent developments of the research with regard to SUMP concept was carried out in order to understand how it could contribute at expanding the already developed SUMP guidelines with the specific knowledge extracted from project activities. The main project outputs include a set of 15 tools, 6 policy briefs, factsheets on enhanced engagement, a Topic Guide, two Practitioner Briefing style reports, a database of lessons and knowledge within the City Consult Agency on how to develop and deliver SUMPs more effectively. These provide a broad set of guidance for city technicians and practitioners and decision makers. Attention was given to the maximization of dissemination of project impacts with an accurate selection of key dissemination channels and target stakeholders as well as by fostering city exchanges and transferability and by ensuring a continuing process of knowledge sharing, mentoring, learning, and replication. This was achieved through the online knowledge platform City Consult Agency. The website and the Social media (LinkedIn and Twitter) were constantly updated. The Follower Cities Group were involved into a number of workshops that led to the elaboration of specific Action Plans for the replicability of the CLs approaches.