Tableau is a tool that was specifically designed to create visualizations of data and generate reports.
The features in Tableau are made to help analysts present their results in the best and most efficient way possible.
The Microsoft Excel tool is more diverse in terms of applicability because it allows users to do different types of calculations and more.
But, Microsoft Excel does not have as many dynamic options for data visualization.
Tableau also helps with forecasting with the help of predictive analysis, hence driving better decision making.