This document evaluates the performance of Apache Tajo compared to other systems like Hive and Spark SQL. It runs benchmarks using the TPC-DS benchmark on Google Cloud Platform. The evaluation shows that Tajo is generally the fastest system and scales well to larger datasets and clusters. Some queries that involve complex joins and aggregations see more room for improvement in Tajo. The document encourages contributors to get involved in optimizing and enhancing Tajo's performance.