Amazon OpenSearch Serverless now supports Collection Groups

This article announces Collection Groups for Amazon OpenSearch Serverless, enabling shared compute resources across collections with different AWS KMS encryption keys.

• Share OpenSearch Compute Units (OCUs) across collections with separate KMS keys
• Reduces overall OCU expenses through shared compute model
• Maintains collection-level security and access controls
• Set minimum OCU allocations alongside maximum limits for predictable performance
• Eliminates cold start delays with guaranteed baseline capacity
• Ideal for multi-tenant workloads requiring data encryption isolation
• Available in all regions where OpenSearch Serverless operates

Collection Groups optimize cost and performance for multi-tenant OpenSearch deployments while maintaining security isolation through separate encryption keys.