m (more rewording)
As a website administrator you might be concerned about the visual appearance of a website but will pass responsibility for making changes and improvements to a web designer. Similarly, when changes to functionality are required you will contract a web developer to do the necessary work. As a website administrator you are responsible for the day-to-day operation and maintenance of the website. Activities might include ensuring that the site is properly backed up; managing user access; possibly installing extensions. You will also have responsibility for maintaining the security of the website.
Note from the Doc Team: The intention is that the list of topics you see below should be task-orientated and not a "feature list" for Joomla! website administration. These items should address real and common activities that an Administrator will need to perform. Please feel free to help us by addingor amending items already present if you think they can be improved.