Digital Twins: Virtual Replicas of the Physical World

A digital twin is a virtual replica of a specific physical asset, kept in sync by live data so you can predict, optimize, and experiment safely in software. This cursus builds the concept precisely: what a twin is and how it differs from a plain simulation, what it is made of (physics and data-driven models, the sensor and data layer, and the types from component to process scale), and where it pays off, predictive maintenance, manufacturing, energy, and more, alongside an honest look at the data, drift, cost, and security challenges.