Ans: Tableau Prep is referred to as a product offered by Tableau which is similar to the ETL tool. ETL refers to Extract, Transform and Load tool which involves extraction of data and cleanse them before the other teams like business analysts, data engineers work with it on the Tableau desktop. Clean data is a data source for the Tableau desktop.
Tableau Desktop is referred to as a data visualization tool that helps in creating the dashboards for designing and obtaining interactive visualizations from the raw data. The Tableau desktop is a product used by the data engineers and data analysts.
There is a difference in between tableau prep builder and tableau desktop based on the usage and applications.