Simplify cross-account access control with Amazon DynamoDB using resource-based policies

This article discusses the new resource-based policies feature in Amazon DynamoDB, which simplifies cross-account access control for sharing DynamoDB resources with IAM principals from different AWS accounts.

Specifically, the article covers:

• Overview of resource-based policies and how they simplify cross-account access compared to identity-based policies
• Solution overview with a multi-tenant application example, comparing the steps required for access control using identity-based policies vs resource-based policies
• Policy examples for different access scenarios, such as giving specific user permissions to a table, granting read access to a DynamoDB stream, allowing querying specific items/attributes, and restricting access based on source IP or VPC endpoint
• Conclusion highlighting the benefits of resource-based policies for simplifying cross-account access management in DynamoDB