REVIEWED-PENDING DOCUMENTATION: What is Livy used for in the Collibra DQ software?

Question: What is Apache Livy used for in the Collibra DQ software?
Answer is from Uday Velayudam: “Essentially, Livy is required to do estimation with data/filtergrams, preview, etc for any large files on remote file systems (HDFS/GCS/S3/Azure).”