CMS is "Content Management System".
This is system which you can to easily manage your website.
Any person who knows the basics of computer programs, such as Microsoft Office, or Open Office should be able to cope without the problem of managing this type of party.
The system is based often for two modules. First corresponds for frontend, second for backend. Frontend is responsible for interface presentations for users. Backend is responsible for manage content which user visible.
Advantages:
Disadvantages: