“…There are several design viewpoints to consider while engineering a DT such as (i) the time frame: history, on‐line, real‐time or forecast, (ii) the foundation of the model: physics, data or hybrid, (iii) the purpose: monitoring, controlling, simulation, optimization or prediction, (iv) intelligence: descriptive, diagnostic, predictive or prescriptive analytics, (v) user interface: dashboard, 2D or 3D visualization, augmented or virtual reality or even metaverse, (vi) the object: a product, an assembled product, a machine, a set of machines or a process, (vi) the life cycle phase of the object, (vii) model generation method: manual or automated, and (viii) the end user: manager, operator, maintenance etc., to mention few 60–63 . These viewpoints should be considered to select proper methods and tools to serve the challenge of industrial business on the selected level, for example, for operations on the factory floor, 64 sustainability assessment, 63 supply chain management, 60,61 or project management 65 . Thus, the engineering of a useful DT requires a combination of competences as well as implementation skills.…”