Wow. What a hand wave away of the intrinsic challenge of writing fault tolerant distributed systems. It only seems easy because of decades of research and tools built since Google did it, but by no means was it something you could trivially add to a project as you can today.
> fault tolerant distributed systems
I mean there were mainframes which could be described as that. IBM just fixed it in hardware instead of software so its not like it was an unknown field.