> so we can and do query the JSON data Also supported in DynamoDB - it's a JSON-database after all. > update deepely nested fields in the JSON natively as wel

> so we can and do query the JSON data Also supported in DynamoDB - it's a JSON-database after all. > update deepely nested fields in the JSON natively as well https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.UpdateExpressions.html https://docs.aws.amazon.com/amazondynamodb/latest/developerg... > PostgreSQL supports setting values, appending to arrays, etc etc natively in an ACID compliant way. https://aws.amazon.com/blogs/aws/new-amazon-dynamodb-transactions/ https://aws.amazon.com/blogs/aws/new-amazon-dynamodb-transac... I'm not saying PostgreSQL is a bad choice by any means, or that DynamoDB is suitable for all projects. But good support for JSON is in no way a capability unique to PostgreSQL. At least ideally, a competently built document database should be at least as good if not better than an SQL database emulating a document database.