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A digital twin is a digital copy of a real-life object created with accurate data gathered from the object in question. The main differences between a digital twin and an ordinary digital model are accuracy and dynamics. Digital twins have a wide range of use, but manufacturing is one of the key focuses, considering that they can improve efficiency and profits on an incredibly large and global scale. They can take in data from sensors in real-time, allowing us to see what is happening at each stage of the process, and not just after.