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Amazon OpenSearch Serverless Adds ABAC and RCP Support

🔐 Amazon announced that OpenSearch Serverless now supports attribute-based authorization (ABAC) for Data Plane APIs, enabling identity policies in AWS IAM to control data read and write operations on collections. The release also introduces resource control policy (RCP), a new AWS Organizations–managed policy type that enforces organization-wide preventative controls centrally. Customers should check regional availability and consult the documentation for implementation guidance.