Understanding evaluation contexts is the key to understand DAX and to start thinking in DAX. In this session we will start from the basics of evaluation context and explain in depth the role of filter context and row context in DAX expressions, providing several examples of formulas where following the flow of contexts in the correct way is mandatory to make a sense out of the numbers computed.
At the end of the session you will have a clearer idea of the importance of evaluation context and you will probably look at your DAX code in a different way.
You can download slides and demos of this session using the link below.