Last weeks I focused on game engine architecture and learned a lot about different approaches like component based, data driven, and so on. I used them in test applications and understand their intention but none of them looks like the holy grail.

So I wonder how major games in the industry ("AAA Games") solve different architecture problems. But I noticed that there are barely references about game engine architecture out there.

Do you know any resources of game engine architecture of major game titles like Battlefield, Call of Duty, Crysis, Skyrim, and so on? Doesn't matter if it is an article of a game developer or a wiki page or an entire book.

I read this related popular question: Good resources for learning about game architecture? But it is focused on learning books rather than approaches in the industry.

Hopefully the breadth of our community can carry together certain useful informations! Thanks a lot!

Edit: This question is focused but not restricted to first person games.