AWS Athena
AWS Athena is a serverless interactive query service that allows you to analyze data directly in Amazon S3 using standard SQL. It eliminates the need for infrastructure management, as it automatically scales to handle queries of any size. It supports various data formats like CSV, JSON, Parquet, and ORC, making it ideal for ad-hoc analysis and business intelligence tasks.
Developers should use AWS Athena when they need to perform quick, ad-hoc SQL queries on large datasets stored in S3 without setting up or managing servers. It's particularly useful for log analysis, data exploration, and generating reports from data lakes, as it integrates seamlessly with AWS Glue for metadata management and supports federated queries across multiple data sources.