Maintenance of your site's content, latest news, images, etc is carried out by you via CMS. But, maintenance of this software along with proofing, testing, security, upgrading is something different, which most of the business personnel prefer to leave it to the CMS professionals.
Whether your website is developed in any of these CMS - Drupal, Joomla, WordPress or Mambo, you need a professional to assist in the maintenance and up-gradation of your website in the most perfect manner.
There are certain daily activities that these experts has to take care. Some of them include security and patch updates to block hackers, bug fixes to ensure the smooth running of the website, along with proofing so that your site looks great and functions perfectly in the internet browsers that are updated frequently.
In addition to this, there are other things to consider for CMS, such as small coding changes that are beneficial for the website to stay at top in the major search engine rankings.
Most of the business owners don't have enough time to check on the updates or skills to maintain the back end of their websites, which is required on the daily basis. Therefore, a professional CMS programmer serves as a best option for them.
Explicitly quoted by Bill Powell of About.com fame - “A CMS is not a book. You write a book, you publish it, and there it is, a lovely block of paper. It's done. It can endure for centuries. By contrast, a CMS is never done. If you don't keep upgrading your CMS, you risk losing your site.”
Resource:
http://cms.about.com/od/maintain-your-cms-website/a/Yes-You-Have-To-Upgrade-Forever.htm
