There are numerous ways to back up Windows 10, but why is it necessary?

Windows 10 allows users to customize their desktop preferences. Consider a scenario where you manage more than 100 Windows 10 devices and are asked to provide input on allowing users to customize items such as the Start Menu. What settings should you allow users to change, and what settings should be controlled by the system administrator? What are the advantages and disadvantages? How does the industry of the organization play a role in your answer?

There are a lot of ways to back up Windows 10, but what are the main benefits of doing so?

Is there anything you'd want to say about Windows 10?