ELI5: what is digital twin technology

What is a digital twin?

A digital twin is like a video game copy of something real, like a toy car or a building [1][3]. Just like how a video game character copies what you do in real life, a digital twin copies what the real thing does by getting information from sensors [3][5].

Why do we need one?

Digital twins let us practice and test things without breaking the real object [2]. If you want to know what happens when a machine gets too hot, you can test it in the digital copy first instead of risking the real machine [1].

What information does it use?

The digital twin gets real-time data from tiny sensors stuck on the real object, kind of like how a smartwatch tells you your heartbeat [3]. This data helps the digital copy stay up-to-date with what the real thing is actually doing [5].

What can you do with it?

You can watch it, predict problems before they happen, and improve how the real thing works [2]. It's like having a crystal ball that shows you the future of your machine or building [1][2].