# AWS OpenSearch optimization | Cloud Efficiency Hub Canonical: https://www.pointfive.co/efficiency-hub/cloud-services/aws-opensearch 6 documented AWS OpenSearch cost inefficiencies, each with how to detect it and how to fix it. [Cloud Efficiency Hub](https://www.pointfive.co/efficiency-hub) 6 documented AWS OpenSearch cost inefficiencies, each with how to detect it and how to fix it. ## 6 inefficiencies [All services](https://www.pointfive.co/efficiency-hub#browse-by-service) - AWS OpenSearch CER-0130 ### [Suboptimal Use of Intel-Based Instances in OpenSearch](https://www.pointfive.co/efficiency-hub/inefficiencies/suboptimal-use-of-intel-based-instances-in-opensearch) AWS Graviton processors are designed to deliver better price-performance than comparable Intel-based instances, often reducing cost by 20-30% at equivalent workload performance. OpenSearch domains running on older Intel-based families... Databases - AWS OpenSearch CER-0147 ### [Outdated Elasticsearch Version Triggering Extended Support Charges](https://www.pointfive.co/efficiency-hub/inefficiencies/outdated-elasticsearch-version-triggering-extended-support-charges) Many legacy workloads still run on older Elasticsearch versions - such as 5.x, 6.0-6.7, or 7.1-7.8 - due to inertia, compatibility constraints, or lack of ownership. Once these versions exceed their standard support window, AWS begins... Databases - AWS OpenSearch CER-0101 ### [Outdated OpenSearch Version Triggering Extended Support Charges](https://www.pointfive.co/efficiency-hub/inefficiencies/outdated-opensearch-version-triggering-extended-support-charges) Domains running outdated OpenSearch versions - particularly Elasticsearch 1.5 through 7.8, OpenSearch 1.0-1.2, and OpenSearch 2.3-2.9, whose standard support ended on November 7, 2025 - begin to incur AWS Extended Support charges once they... Databases - AWS OpenSearch CER-0367 ### [Underutilized OpenSearch Service Domain](https://www.pointfive.co/efficiency-hub/inefficiencies/underutilized-opensearch-service-domain) OpenSearch Service managed domains are sized by choosing data node instance types and counts, optional dedicated master (cluster manager) nodes, and an EBS volume per data node. These choices are usually made from a peak ingest estimate or... Databases - AWS OpenSearch CER-0368 ### [Aged Indices Retained on Hot Storage in OpenSearch Service](https://www.pointfive.co/efficiency-hub/inefficiencies/aged-indices-retained-on-hot-storage-in-opensearch-service) Log, metrics and other time-series domains in OpenSearch Service typically write to a new index per day or per rollover, and most queries touch only the last few days. Without an Index State Management (ISM) policy, every older index stays... Databases - AWS OpenSearch CER-0369 ### [Low Commitment Coverage for Steady-State OpenSearch Service Domains](https://www.pointfive.co/efficiency-hub/inefficiencies/low-commitment-coverage-for-steady-state-opensearch-service-domains) Production OpenSearch Service domains for search, logging and observability usually run around the clock with a stable node configuration for months or years. When none of that usage is covered by a commitment, every instance-hour is... Databases ## More AWS services - [AWS EC2 23](https://www.pointfive.co/efficiency-hub/cloud-services/aws-ec2) - [AWS RDS 19](https://www.pointfive.co/efficiency-hub/cloud-services/aws-rds) - [AWS S3 15](https://www.pointfive.co/efficiency-hub/cloud-services/aws-s3) - [AWS Lambda 12](https://www.pointfive.co/efficiency-hub/cloud-services/aws-lambda) - [AWS EBS 10](https://www.pointfive.co/efficiency-hub/cloud-services/aws-ebs) - [AWS CloudWatch 8](https://www.pointfive.co/efficiency-hub/cloud-services/aws-cloudwatch) - [AWS EKS 8](https://www.pointfive.co/efficiency-hub/cloud-services/aws-eks) - [AWS ElastiCache 8](https://www.pointfive.co/efficiency-hub/cloud-services/aws-elasticache) - [AWS DynamoDB 7](https://www.pointfive.co/efficiency-hub/cloud-services/aws-dynamodb) - [AWS Bedrock 6](https://www.pointfive.co/efficiency-hub/cloud-services/aws-bedrock) --- Source: the public page above. Product screenshots and illustrative interfaces are examples, not live customer data.