The tutorial provides a step-by-step guide on building a dynamic and performant data visualization dashboard using Supabase for data storage and Cube for efficient data querying and aggregation, all within a 15-minute timeframe. It addresses the challenges of handling large datasets and slow query times associated with traditional row-oriented databases like PostgreSQL, which Supabase uses. The tutorial introduces Cube, an open-source business intelligence platform that offers faster query responses through pre-aggregations and an API layer, enhancing the user experience in data applications. It explains how to set up a Cube instance using Cube Cloud, auto-generate data schemas, and create visualizations in React, using features like autogenerated front-end code and pre-aggregations to significantly improve query performance. The tutorial also highlights the additional features of Cube, such as multi-tenancy and various API supports, encouraging further exploration through Cube’s documentation and community resources.