Google BigQuery is a fully-managed enterprise data warehouse service that allows users to run SQL-like queries on massive datasets. It is useful for analyzing and processing large amounts of data, and can be integrated with other Google Cloud services such as Google Cloud Storage and Google Cloud Dataflow. With BigQuery, users can gain valuable insights into their data, and make informed decisions based on that data. BigQuery also supports machine learning and AI workflows, making it a powerful tool for data scientists and analysts.