If the worst happens and there is a problem with your site, having a backup stored separately from your hosting account is vital so you can get back up and running, with minimum downtime and loss of business.
For these reasons, it is of top importance that you make time every week to perform all these tasks. If you feel that this is something you would rather have a professional do for you though, Several maintenance packages are offered which are tailored to fit all needs.They all include WordPress, theme and plugin updates as well as keeping your database running smoothly and a backup of the site performed weekly or monthly.
Other tasks such as SEO and analytics reports can be generated to see how well your site is performing.
All this takes time and can be confusing but by subscribing to a maintenance package, this work will be done for you leaving you to relax in the knowledge that you are in safe hands and focus on the things that are more important to you.