AWS – Amazon Athena adds support for running SQL queries across relational, non-relational, object, and custom data sources.

Federated queries in Amazon Athena enable users to run SQL queries across data stored in relational, non-relational, object, and custom data sources. The feature, which is now generally available in the us-east-1, us-west-2, and us-east-2 regions, enables customers to submit a single SQL query that scans data from multiple sources running on-premises or hosted in the cloud.  

Read More for the details.