Content Management is simply the ability for a client to edit the content of their website using simple to use tools. My developed CMS (Content Management System) uses a WYSIWYG interface whereby clients can edit the pages via web browser and "see" page changes as they happen.
The interface has much familiar to editing a word document - but I have taken CMS onto a much more advanced level and used PHP and Javascript to allow users to add and remove pages, manipulate page layouts, add dynamic content such as news and vacancies, and open up the possibilities of CMS.
I have created advanced functions too such as PDF generation, text-only versions, image manipulation, multi-lingual sites, authorisation and permission modules and other such functions. CMS is a truly powerful concept.
Why CMS?
CMS gives clients direct control over their websites and its content. Often clients who are the decision makers for web content are non-technical people - marketing managers and PR specialists.
To get changes made to sites, they either have to pass them to an external agency (costly) or give them to a nominated, technical person (who is usually some I.T. technician who has a thousand other things to do).
Instead of tying up content in Word, clients can open a web browser, log in and directly edit their sites in real time. No delays or costs other than the initial setup and any hosting charges. I believe in CMS.