A CMS is a Content Management System, a tool that enables a variety of technical andnontechnical staff to create, edit, manage and finally publish a variety of content (such as text, graphics, video, and so on) whilst being constrained by a centralized set of rules, process, and workflows that ensure a coherent, validated Web site appearance. A CMS provides to separate the programming language, the graphic design and the content in a way that each of this elements can be worked out by different people.