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Digital Twins are an important concept in the comprehensive digital representation of manufacturing assets, products, and other resources, comprising their design and configuration, state, and behaviour. Digital Twins provide information about and services based on their physical counterpart’s current condition, history and predicted future. They are the building blocks of a vision of future Digital Factories where stakeholders collaborate via the information Digital Twins provide about physical assets in the factory and throughout the product lifecycle. Digital Twins may also contribute to more flexible and resilient Digital Factories. To achieve this, Digital Twins will need to evolve from today’s expert-centric tools towards active entities which extend the capabilities of their physical counterparts. Required features include sensing and processing their environment and situation, pro-actively communicating with each other …