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The objective of this paper is to conceptualize a circular business model based on an ecosystem architecture, through the integration of circular economy concepts and systems thinking principles. An operational conceptual model will be presented with the aim of managing the complexity of integrating circular economy principles, digital transformation and sustainable and responsible development tools and frameworks into business models. The proposed collaborative architecture is multi-level, multi-scale and multi-aspectual, allowing the instantiation of the sustainable value chain in any territory (territorial and digital spaces) and for many types of socio-economic innovations. The proposed holistic architecture promotes the incorporation of Circular Economy 4.0 and Society 5.0 systemic principles integrated into new circular business models. This integrated perspective of Business Model 4.0 and Society 5.0 can support the design of digital products, social systems services, and organizations, as well as the
