Amazon OpenSearch Ingestion now allows you to create VPC interface endpoints to securely connect your VPC to Amazon OpenSearch Ingestion pipeline via AWS PrivateLink. This allows greater control in meeting your network and security posture by explicitly restricting VPC resource access to only entities that need it. Furthermore, you can now connect multiple VPCs to a single Amazon OpenSearch Ingestion pipeline in an AWS account allowing network architectures for centralized logging.
With customer-managed VPC endpoints, your VPC resources can communicate with Amazon OpenSearch Ingestion within the AWS network, which helps you meet your compliance and regulatory requirements to limit public internet connectivity. You can now use Amazon VPC APIs to connect your VPCs to Amazon OpenSearch Ingestion pipelines, giving you access to advanced VPC features like identity-based policies and alerts for endpoint events.
Source:: Amazon AWS