Ooooooooooh, that makes sense now. I thought it was a database implemented as as whole series of individual lambdas and I was having a hard time figuring out how you guys pulled that one off.
Pretty sure this is how reality works: all matter is information, all information is functional, hence all perception is the lazy evaluation of a functional universe.
Could be done with data stored in files in S3 buckets. Probably not the most efficient way to run a queryable database, but possibly not the worst either.
Data stored "on the wire"? :D