Purpose of a content management system.
Back in the early days of the world wide web (WWW) people built each page of their site using basic HTML. When a html page was complete the user would have to log onto their FTP server and upload all the files necessary for that page to display correctly. This was very cumbersome and time consuming. As years progressed and the internet became more mature with programming languages such as PHP, Javascript, ASP, and the newer Ruby on Rails, web developers realized there were much simpler ways to create a content rich web site without having to know complex programming langauges. Thus the birth of the Content Management System (CMS).