The website maintenance process is usually straightforward and usually results in no downtime for your website. The process is to first take a backup of your website or upload to your dev/dev server if you have one. From there, plugin upgrades are usually done 1-by-1, and the site is thoroughly checked to make sure no plugins cause problems. Once everything is updated and tested, your website will go live, which usually takes a minute or two depending on size, and work without any issues.
