This deliverable provides a comprehensive description of the Digital Twin Engine Infrastructure architecture updated at M24 of the interTwin project. It focuses on the overall design of the system that provides the pillars for both data and compute federations. This includes the requirement analysis of the needs of the scientific communities as well as the requirements coming from a set of highly heterogeneous resources providers together with the experiences coming from the integration pilots. It details the different components of the architecture defining the related role and how they will interact with each other in order to implement the digital “continuum” between cloud-edge and multi cloud environments, HPC and HTC Centers. Policies to access the resources and resources accounting are also reported.
