One thing you want to make sure of doing is routine updates and making sure you have a backup for your website. Make sure you have a few backups of your site as well. Updates can potentially break the site, therefore its always good to back up what you have created. Also, having a maintenance schedule and having scheduled backups can help make sure you are keeping up on making sure your site is secure and functioning properly.
Make sure to monitor the security of your website. They make plug-ins that can help monitor that for you, such as Wordfence. Also, keeping your site up to date can help keep your site secure. Fixing any issues with your site will keep it less vulnerable. Changing passwords often can help prevent any security issues as well.
Do tests of your site and make sure there are no broken links, making sure that forms work, and any 404 errors are fixed as well.
Monitor your search engine optimization an make sure your site is indexed on search engines.
Renew your domain name and hosting when the time arrives.
Keep your content up to date and relevant.
