Netflix runs Presto in its AWS cloud environment to enable low-latency ad-hoc queries on petabyte-scale data stored in S3. Some key things Netflix did include optimizing Presto to read from and write directly to S3, fixing bugs, integrating Presto with its EMR and Ganglia monitoring, and deploying a 100+ node Presto cluster that handles over 1000 queries per day. Performance testing showed Presto