Joomla is very powerful, flexible, and free to use, and therefore, if implemented correctly, websites can do a lot of different things cost effectively. E-commerce, community, backup, membership, etc are just a short list of things that can be implemented in the website using Joomla and its extensions. Flexibility in customization is also a strong feature of Joomla to give you the desired look and feel of the website. Updating/modifying contents on Joomla websites is much easier than traditional websites.