This is AskUK, we don’t have HBO/Max over here. Most stuff ends up on Sky TV (satellite, although these days they’re moving to delivering over broadband internet - basically charging you twice, once for broadband, and again for TV over the broadband, all while charging satellite prices), but sometimes HBO stuff ends up on Amazon. It’s a bit like Dr Pepper, in the US it’s owned by Pepsi, but in Europe it’s owned by Coca Cola.

I was actually kind of guessing based on a vague memory of seeing The Pitt next to an Amazon logo somewhere, however looking it up it seems like it hasn’t been released in the UK at all yet. Hopefully soon! I expect it will be a hit here also.