The other answers are great, but to add more - You can run it behind an air-gap, where your systems are disconnected from the world. - You can run it on the e

The other answers are great, but to add more - You can run it behind an air-gap, where your systems are disconnected from the world. - You can run it on the edge with low or no internet connectivity - You do not need to worry about breaching geographic data restrictions, e.g.: medical data from Country X cannot leave Country X