Amazon OpenSearch Serverless now supports up to 10,000 collections per collection group

Amazon OpenSearch Serverless now supports up to 10,000 collections within a single collection group, increased from the previous limit of 1,500.

• Collection groups organize multiple collections and enable shared OpenSearch Compute Units (OCUs)
• Collections can be encrypted with different AWS KMS keys while sharing compute resources
• Reduces costs by consolidating more collections into a single collection group
• Particularly beneficial for multi-tenant applications provisioning one collection per tenant
• Improves compute utilization and lowers per-collection costs without additional collection groups
• Higher limit applies automatically to new and existing nextgen collection groups
• Available in all AWS Regions where Amazon OpenSearch Serverless is offered

This enhancement enables customers to scale multi-tenant workloads further while maintaining collection-level security and access controls.