Tableau Reader is a free desktop application that you can use to open and interact with data visualizations built in Tableau Desktop. Filter, drill down and discover.
Anyone with Tableau Reader can open a .twbx to see the visualization... but they can also interact.
For instance, the sales analytics team could create a workbook on quota attainment that shows results for the entire company. Then, individual sales reps could open that workbook and filter to their territory to see their own contribution.