TransformAr aims to develop and demonstrate solutions and pathways to achieve rapid and far-reaching transformational adaptation (TA) across the EU. Cross-sectoral and multi-scale innovation packages, as the combination of solutions and pathways, will support regions and communities in their societal transformation towards climate change resilience. Region-specific portfolios (RSPs) including Nature-Based Solutions, innovative technologies, financing, insurance and governance models, awareness and behavioural change are co-developed and demonstrated. Transformational adaptation will be triggered by a co-innovation process that will co-create transformational adaptation pathways for six demonstrator regions and communities in Europe. The pathway co-creation process is supported by user-friendly, accessible, and comprehensive multi-sector dynamics data services. The data services fit to the needs of public and private investors, including citizens in TA. To accelerate investment in climate change adaptation (CCA), and to enable that plans are brought into practice, TransformAr also demonstrates the potential of business models and alternative finance mechanisms for transformation adaptation. A European Community of Practice will furthermore be organised and institutionalised to facilitate the exchange of knowledge and other resources that may help to overcome barriers, implement, and accelerate opportunities. Common processes to reach TA are gathered 9 in Transformational Adaptive Blocks (TABs). The project addresses the needs of the GD-1-3-subtopic 1 call.