Why do the updates?
WordPress is an open source platform and is often exploited by hackers.
The update will allow you to keep your website safely online.
A hacked website can affect your email delivery, as well as your reputation.
How to make the updates?
Before making an update, a backup should be made to quickly go back in case of a problem. Updates are usually done from your WordPress backend.
Entrust the execution of updates to your servers regularly to the webO3 team.