What is Amazon Athena?

Amazon Athena is an interactive query service that makes it easy to analyze data directly in Amazon S3 using standard SQL. It is serverless, so there is no infrastructure to set up or manage, and you pay only for the queries you run. Athena scales automatically, executing queries in parallel for fast results even on large datasets. It integrates with AWS Glue Data Catalog for metadata management and supports various data formats including CSV, JSON, Parquet, and ORC. Athena can query encrypted data in S3 and integrates with QuickSight for visualization. It is commonly used for log analysis, business intelligence, and ad-hoc querying without requiring ETL processes.