A live virtual copy of a real thing, used to watch and test it.
It is like a video game copy of a real factory. If one real machine overheats, its game twin starts sweating too.
Teams use it in factories and smart cities to watch the real thing. They test fixes there before touching the real one.
Physical AI
A digital twin gives Physical AI a safe virtual place to try things.
Deployment Simulation
Deployment Simulation uses a digital twin to rehearse real scenes early.
Robotics
Robotics can use a digital twin to practice skills with less risk.
World model
A World model is more internal, while a digital twin is a live outside map.