OpenSearch UI supports cross-region data access to OpenSearch domains

Amazon OpenSearch Service now supports cross-region data access for OpenSearch UI, enabling users to access OpenSearch domains hosted in different AWS Regions from within a single OpenSearch UI application. Combined with the [cross-account data access](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/application-cross-account-data-access-domains.html) launch earlier this year, you can now query or build dashboards on OpenSearch domains in flexible combinations of accounts and Regions - without switching endpoints or replicating data. Cross-region data access is available for OpenSearch domains hosted in both public and Virtual Private Cloud (VPC) configurations. With cross-region data access, teams can build centralized analytics, search, and observability workflows across globally distributed deployments while keeping data in place - meeting data residency requirements, minimizing inter-region egress, and preserving each Region’s latency and availability characteristics. If you are using cross-cluster replication, you can now query both your primary and replica domains directly from a single OpenSearch UI application. Cross-region data access can be combined with cross-account data access, so a single OpenSearch UI application can connect to domains in different accounts, different Regions, or both. Cross-region data access supports both IAM and IAM Identity Center for end-user authentication. Cross-region data access to OpenSearch domains is available in all AWS Regions where OpenSearch UI is available. To learn more, see [Cross-region data access to OpenSearch domains](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/application-cross-region-data-access-domains.html) in the Amazon OpenSearch Service Developer Guide.