MS Excel text handling question?

I want to combine text strings from different cells to create a new string:

A B C
1 John Doe John Doe
2. Mary Roe Mary Roe

I know there's a way, did it years ago; something like "A1"+"B1" as the formula for C1.

Joshua2018-03-16T14:06:38Z

You're looking for the function concat. If you want to joint the text from A1, B1, and C1 (lets say), it would be
=CONCAT(A1, B1, C1)
Though keep in mind that the function does not add spaces, and so you will need to add a space after each cell youre joining together.