What Should Be Included in Website Maintenance Services?

I’ve been looking into how businesses keep their websites running properly after the initial design and launch. A website needs more than occasional content updates, especially when it relies on plugins, software, forms, and other integrations.

Good website maintenance services can include software updates, security checks, backups, broken-link monitoring, performance improvements, content updates, and checking that important forms and features are working correctly.

For business owners who use a maintenance service, what tasks do you consider essential? Do you prefer handling routine maintenance yourself, or is it easier to have a professional manage everything on a regular basis?