Amazon OpenSearch UI supports CMK and increased metadata size

Published
December 29, 2025
https://aws.amazon.com/about-aws/whats-new/2025/12/amazon-opensearch-ui-cmk-metadata/

Amazon OpenSearch Service Updates

Amazon OpenSearch Service now supports AWS KMS customer managed keys (CMKs) and increased size for OpenSearch UI metadata. This managed service offers a unified view across multiple data sources, including OpenSearch domains and collections, Amazon S3, Amazon CloudWatch, and AWS Security Lake.

New Features

  • CMK Support: Create new OpenSearch UI applications with metadata encrypted using your own CMKs, aiding compliance with regulatory requirements.
  • Increased Metadata Size: The metadata size limit for saved objects in OpenSearch UI has been increased, allowing for complex queries, extensive visualizations, and large-scale dashboards.

Availability

CMK support and increased metadata size are available in all regions where OpenSearch UI is offered.

What to do

Source: AWS release notes




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