EXACT Compares two text strings and returns TRUE if they are exactly the same, FALSE otherwise. EXACT is case-sensitive but ignores formatting differences. You can use EXACT to test text being entered into a document.
Syntax
EXACT(text1,text2)
Parameters
text1 – The first text string or column that contains text.
text2 – The second text string or column that contains text.
Return Value
True or false. (Boolean)
Reference Data
https://docs.microsoft.com/en-us/dax/dax-function-reference