DynamoDB Streams And Global Tables

DynamoDB Streams capture all changes made to a DynamoDB Table. This includes only actions that modify the table, not actions that only read from the table.

DynamoDB Global Tables take advantage of DynamoDB Streams the create Multi-Region active/active DynamoDB Tables. This allows you to modify a table in multiple regions and have those changes reflected in all regions.

Multi-Region, active/active data stores are a big deal and extremely useful for use cases that require it.