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. Athena is serverless, requiring no infrastructure to set up or manage, and you pay only for the queries you run. It integrates with AWS Glue Data Catalog for metadata management and supports various data formats including CSV, JSON, Parquet, and ORC. Athena can query petabytes of data stored in S3 with excellent performance. It supports federated queries to analyze data across multiple sources including relational databases, NoSQL databases, and other data sources.