In IT (Information Technology) CMS (Content Management System) is a software installed on a web server that relies on a database to manage the contents of a website in a dynamic way. Among the features of a CMS is that of being divided into a control panel (back end) for the creation of content and an application section (front end) that users use to view the contents published on the website.
Since many years there have been several Open Sourse CMS like WordPress, Drupal and Joomla that allow non-expert users to create content for their site. Obviously for the structural changes it is necessary to know the programming languages like PHP, HTML, CSS and the MySQL database in the case of the Content Management System.
The use of CMS allows the site customer to enter and / or modify the website content in total autonomy and to create specific users to divide the management of the professional figures that will be allowed to create and / or modify the site even just in some aspects. Even if on the internet there are several guides to better manage your CMS, a novice user will have to use precious time to learn how to manage the control panel, SEO (Search Engine Optimization) and assimilate the basic notions of programming languages used for the development of the CMS.
Probably the best way to develop a site based on a CMS is to hire a webmaster that, thanks to his IT in (information technology) knowledge and experience, will be able to use "content management systems" optimally and reduce the cost of the site.