A CMS or a 'Content Management System' quite literally allows you to control and manage the content within your web site - without technical training. Using this uncomplicated system you can very easily add, delete images and edit text in your web site on the fly.
You can also have an unlimited number of pages and a full site-search engine. You need have no programming or HTML experience.
CMS stands for Content Management System. It is a term and has not been endorsed with a solid definition. A CMS can have multiple meanings depending on the scenarios and the person's or project objectives.
Managing content refers to creating, editing, archiving, publishing, collaborating on, reporting, distributing website content, data and information.