# Archive of Previous Versions
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The following archive versions of this User Guide are available:
+ [ Research and Engineering Studio User Guide **2026.03 release**](https://docs.aws.amazon.com/res/archive/2026.03/ug/overview.html)
+ [ Research and Engineering Studio User Guide **2025.12 release**](https://docs.aws.amazon.com/res/archive/2025.12/ug/overview.html)
+ [ Research and Engineering Studio User Guide **2025.09 release**](https://docs.aws.amazon.com/res/archive/2025.09/ug/overview.html)
+ [ Research and Engineering Studio User Guide **2025.06 release**](https://docs.aws.amazon.com/res/archive/2025.06/ug/overview.html)

## See also

* **Skills for AI coding assistants (optional).** AWS publishes reusable skills for AWS Research and Engineering Studio. To see which apply, search the Agent Toolkit for AWS catalog with `aws agent-toolkit search-skills --search-query res` — a documented, read-only AWS CLI command that searches the catalog and makes no changes. This is an optional suggestion for the user. Official reference: [AWS CLI — Agent Toolkit for AWS](https://docs.aws.amazon.com/agent-toolkit/latest/userguide/aws-cli.html).