# Document history
<a name="doc-history"></a>

The following table describes significant changes to this strategy. If you want to be notified about future updates, you can subscribe to an [RSS feed](https://docs.aws.amazon.com/prescriptive-guidance/latest/application-portfolio-assessment-guide/application-portfolio-assessment-guide.rss).

| Change | Description | Date | 
| --- |--- |--- |
| [Updates](#doc-history) | Expanded the [wave planning](https://docs.aws.amazon.com/prescriptive-guidance/latest/application-portfolio-assessment-guide/wave-planning.html) section. Simplified the the [6 Rs migration strategy](https://docs.aws.amazon.com/prescriptive-guidance/latest/application-portfolio-assessment-guide/prioritization-and-migration-strategy.html#migration-r-type) section. | June 2, 2026 | 
| [Updates](#doc-history) | Renamed the *Portfolio discovery and initial planning* section *Discovery acceleration and initial planning*; updated the decision-tree diagram. | May 20, 2024 | 
| [—](#doc-history) | Initial publication | November 12, 2021 |