The order of operations in Tableau refers to the sequence in which the software processes the data and calculations in a given worksheet or visualization.
The order of operations in Tableau is the order in which Tableau performs its various actions. An action is mostly identified as a filter, but can also be a calculation or another Tableau feature which is computed.
This is Tableau’s Order of Operations:

It shows in which sequence filters are handled with by Tableau: first extract filters, than datasource, context, dimension, measure and table calculation filters. The ‘inserts’ on the right are