Implementing fine-grained Amazon Route 53 access using IAM condition keys (Part 2)

This article demonstrates how to implement fine-grained Route 53 access control across AWS accounts using IAM condition keys and principal tags.

• Extends Part 1 solution to enable cross-account DNS management with shared hosted zones
• Uses IAM roles with assume role functionality and session tags for temporary credentials
• Compares DNS record names against session tag values using route53:ChangeResourceRecordSetsNormalizedRecordNames
• Implements least-privilege access by restricting users to specific DNS record suffixes
• Provides step-by-step implementation guide with CLI commands and policy examples
• Includes verification tests showing successful and failed DNS record creation attempts
• Recommends Route 53 Profiles for non-shared hosted zone environments

This solution enables scalable, attribute-based DNS access management across AWS accounts while maintaining security and least-privilege principles.