OpenSearch Migrations: Modernize Without Worry

OpenSearch Migrations: Modernize Without Worry - Peter Nied & Brian Presley, Amazon Web Services No matter what version you’re running—whether it’s legacy Elasticsearch or an earlier OpenSearch release—you can adopt OpenSearch 3.x with zero risk to your existing cluster using the Migration Assistant (MA). In this session, we’ll introduce the Migration Assistant, a new open-source tool purpose-built to help you transition safely to the latest OpenSearch release. We’ll highlight its compatibility across a wide range of Elasticsearch and OpenSearch versions, and show how it enables staged, observable migrations. Whether you’re migrating metadata, reindexing historical data, or verifying production traffic playback, this talk will give you a clear roadmap—and confidence—to modernize your cluster with minimal friction. We’ll close with an open Q&A to dive into your use cases and migration challenges.