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by AdieuToLogic 1128 days ago
> DynamoDB offers ACID transactions, even across tables, as of several years ago.

It depends on how DynamoDB is used[0]:

  Transactional operations provide atomicity, consistency,
  isolation, and durability (ACID) guarantees only within
  the region where the write is made originally.

  Transactions are not supported across regions in global
  tables.
Granted, this likely handles most use-cases and the restriction enforced makes complete sense.

0 - https://docs.aws.amazon.com/amazondynamodb/latest/developerg...