Elasticsearch Analytics

Elasticsearch is a distributed search and analytics engine used for real-time analytics on massive datasets. Beyond logging, it powers analytics for: e-commerce (product searches, recommendations), financial services (transaction analysis), media (content search). Specialists build complex aggregation pipelines to answer business questions: which products sell most in Q2? Where are support tickets slowest? Learning takes 4-6 weeks (queries, aggregations); mastery (custom analyzers, performance tuning, distributed architecture) takes 3-6 months. Analytics engineers earn $120-180K+ because queries that took days in SQL run in seconds on Elasticsearch.