Answer: It always comes after the fact.
Explanation:
Feedback is very important for a company. It helps them know where they need to improve on so that they can offer better services ti customers. It also fosters good relations with customers as they will feel their input is taken into account.
Unfortunately though the whole premise of Feedback is that it's based on information of an event that has already happened and SOMETIMES CANNOT BE CHANGED. This is a very huge drawback but one that is implicit in the process itself.