Websites require routine maintenance for several reasons. Website backups can help prevent site loss. Although uncommon, hackers can try to access your website and destroy its content. By having a current backup, if your site is compromised, the backup can be installed and the site restored.
Just like your smartphone has apps, your website has plugins. The plugins provide specific features that help your website function. Just like your phone needs updates, so do the plugins. Occasionally, these plugin updates can cause issues with the website. Correcting any update issues is part of the maintenance process.
Over time, links from your website to other sites can become broken. This often happens when the other website has taken down or removed the page containing the link. Your site containing broken links is bad for your customers and your SEO. We will fix or remove the links when they are discovered.