Why OpenSearch?Open source, community-driven, and vendor-neutralFamiliar APIs and an easy transition pathExpanding ecosystem and toolingFrom Apache Solr (enterprise search)From Algolia (Search as a Service)From Splunk (logs and SIEM)From Elasticsearch (all use cases)From Amazon CloudSearch (Search as a Service)Stages of migrationPlanningProof of concept (POC)Set up a test clusterCompatibility testingPerformance and scalability testingDeployDeploy in phasesMigrate data and indexesCutover to OpenSearchContinuous monitoring and optimizationPatterns for minimal or no-downtime migrationDual-write pattern: migrating e-commerce search without losing a beatShadow read pattern: matching relevance in travel searchBlue-green deployment: taking control of logging from SplunkCanary deployment: search reinvented for a national news siteCold data replay: compliance-first migration for a fintech companyOpenSearch Migration AssistantPre-migration checks and metadata reviewTraffic replay for near zero-downtime testingHistorical data migrationMigration management consoleDeployment optionsHow teams are moving to OpenSearch – without missing a beatAnyMovie’s search migration and modernizationFinal outcomeAnyLog’s live logs migration—a cleaner path to observabilityOutcomeSummaryJoin our community on Discord