# AWS CLI 2.36.40

- Product: AWS CLI (https://whatsnew.fyi/product/aws-cli)
- Vendor: Amazon Web Services
- Date: 2026-09-04
- Version: 2.36.40
- Original notes: https://github.com/aws/aws-cli/releases/tag/2.36.40
- Permalink: https://whatsnew.fyi/product/aws-cli/releases/2.36.40

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **added** — New AWS REVIEW mode as supported data retention mode for Bedrock models
- **added** — Support for ValidateSecurityGroupQuotasForInterface API for authorized AWS services to validate security group rule quotas before creating an elastic network interface
- **added** — AdjustableAtLevel property to QuotaContext in Service Quotas, indicating whether a quota is adjustable at the account or resource level
- **added** — Two new Monetization Functions lifecycle hooks in Elemental MediaTailor: Post Ads Response and Pre Manifest Insertion
- **added** — VAST Request function type in Elemental MediaTailor that calls a VAST or VMAP ad server
- **added** — Yield Optimization with demand from Amazon Publisher Services in Elemental MediaTailor

* api-change:``bedrock``: New AWS REVIEW mode as supported data retention mode for Bedrock models
* api-change:``ec2``: Adds support for ValidateSecurityGroupQuotasForInterface, an API that specifically authorized AWS services use to validate security group rule quotas before creating an elastic network interface.
* api-change:``service-quotas``: Service Quotas adds the AdjustableAtLevel property to QuotaContext, indicating whether a quota is adjustable at the account or resource level.
* api-change:``mediatailor``: Elemental MediaTailor now supports two new Monetization Functions lifecycle hooks, Post Ads Response and Pre Manifest Insertion, and a VAST Request function type that calls a VAST or VMAP ad server. This release also adds Yield Optimization with demand from Amazon Publisher Services.