AWS Athena is a serverless interactive query service that allows users to analyze data stored in Amazon S3 using standard SQL. It enables quick querying of large datasets without the need for complex data preparation or infrastructure management. Users can simply point Athena at their data, define the schema, and start querying. Athena is designed for ease of use, making it accessible for both technical and non-technical users. It integrates seamlessly with other AWS services, allowing for efficient data analysis and reporting. Additionally, users only pay for the queries they run, making it a cost-effective solution for data analysis.