Content Management Systems (CMS) allow you to log into a back-end administration area and change your websites content from anywhere around the world!
As long as you have internet access, you can simply log in and modify existing content or create new pages with ease. There is no limit to the content you add, making perfect for small to medium businesses.
The great advantage of these systems are the flexibility that they offer. Content can be added gradually over time allowing your website to grow with your business.