Is a cell update (via a formula) considered a row update for Notifications?

edited 12/09/19 in Smartsheet Basics

I am trying to determine if a cell changing via a formula is considered an update to start a notification. 

I have a cell that will change status based on another cell that calculates the number of days until expiration from today's date.

I guess the real question is what flags the system as an update; the values of a cell being physically changed from user input (say from 1 to 2) or a formula that would calculate the value being changed (from 1 to 2 based on today's date)