Presto is an open-source distributed SQL query engine that can be placed on top of a wide variety of data sources, from Hadoop distributed file system (HDFS) to traditional relational databases as well as NoSQL data sources such as Cassandra. Presto is particularly equipped to perform multiple concurrent interactive queries against a data source.
Presto was developed at Facebook in Fall 2012 as a replacement to Hive, and Facebook still uses the software to query their 300 petabyte Hadoop cluster filled with data generated from their 1 billion-plus users. Other prominent technology companies such as Netflix, Dropbox, and Airbnb. There is therefore a strong developer community behind the project.
Teradata has a dedicated team of over 20 developers contributing open source code to Presto. The company supports a multi-year commitment to increasing Presto adoption in the enterprise. However, the documentation is limited and is best suited for developers, which means you will need engineering resources to setup and maintain your Presto Configuration.