An as-built digital twin is a digital representation of a physical object or system that reflects its actual, current state. It is created by capturing data from various sources, such as sensors, cameras, and other digital devices, and using that data to build a virtual model that accurately reflects the object or system as it exists in the real world. The term "as-built" refers to the fact that the digital twin is created based on the actual physical object or system, as opposed to a design or conceptual model. This means that the as-built digital twin includes details such as dimensions, materials, and other characteristics that may not have been accurately represented in earlier models. As-built digital twins can be used in a variety of applications, such as monitoring and maintenance of infrastructure, optimizing performance of manufacturing equipment, and even in the design and construction of new buildings and structures. By providing a detailed and accurate digital representation of a physical object or system, as-built digital twins can help improve efficiency, reduce costs, and enhance safety and reliability.