# Document history
Reorganization and new content

Reorganized guide and added new content throughout.Initial publication as standalone guide

Converted from a chapter in the [AWS SRA – core architecture guide](https://docs.aws.amazon.com/prescriptive-guidance/latest/security-reference-architecture/) to an individual guide.

The following table describes significant changes to this guide. 

| Change | Description | Date | 
| --- |--- |--- |
| [Reorganization and new content](#doc-history) | Reorganized guide and added new content throughout. | February 24, 2026 | 
| [Initial publication as standalone guide](#doc-history) | Converted from a chapter in the [AWS SRA – core architecture guide](https://docs.aws.amazon.com/prescriptive-guidance/latest/security-reference-architecture/) to an individual guide. | December 22, 2025 |