I didn't realize the long-awaited eSIM was actually a thing, but apparently it has been supported in a couple of Android phones for a bit now. Apple has jumped on the bandwagon with the new iPhone Xs and Xs Max. I know manufacturers have been trying to get eSIM functionality in their phones for a while, and always heard that the carriers were fighting them. Apparently the carriers finally gave in.

Has anyone used an eSIM in their travels? How's it work?

Here's Apple's discussion of it:
https://support.apple.com/en-us/HT209044