Overview of DocumentDB

Amazon DocumentDB is a fully managed and scalable NoSQL database designed to store and query semi-structured data such as JSON documents. JSON documents are pieces of information saved in a format structure called JavaScript Object Notation (JSON). The fixed structure of a JSON document allows all the data and fields within it to be queried similarly to an RDBMS table.

DocumentDB is compatible with another popular document database called MongoDB. This makes it a good choice for customers who are looking to move to an open source document database while currently using MongoDB.

DocumentDB is similar to DynamoDB in that they are both NoSQL databases, but while DynamoDB is tuned for key-value data retrieval operations, DocumentDB is more tuned to favor fast query handling. Also, DocumentDB is provisioned in a similar way to RDS, where you define an instance size to handle your workload as opposed to DynamoDB, which uses read/write capacity units. However...