Joomla is a very powerful Content Management system (CMS) tool that I have had the opportunity to work with. I have taken some courses and worked on a production web site using this CMS tool and feel confident in my skills and knowledge. For the right business Joomla can be a great choice for you.
If you want a easy user interface and would like to add/update content such as specials, calendar events, or sales promotions. Joomla would be great for you, the user friendly back end dashboard can allow multiple users, easy to navigate and using the Widgets make changing content easy.