Intuit handles a massive amount of data, including hundreds of thousands of tables and petabytes of data. They serve over 100 million customers and have a comprehensive data architecture in place. Intuit primarily uses AWS S3 for data persistence and relies on Presto and Spark for data processing. They utilize Presto on Spark for exploration, operationalize queries through data pipelines, and leverage Tableau and Qlik Sense for data visualization.