Most of the larger websites I construct are now Content Managed - that is, they can be fully maintained by the end client without the need for intervention by technical personnel. My clients can create new pages, upload photographs, change prices, rewrite text and more all online via secure and easy to use web controls. With no need to come back to me with these changes, they can be applied instantly and without any cost.
All Content Management websites I now develop use Tieba™ - a powerful and feature rich CMS application of my own development, now in it's third edition and in use by major companies all over the U.K.
Tieba features extremely easy to use controls to maintain the website content including full WYSIWYG (What You See Is What You Get) editing very similar to modern word processors. It is suitable for small websites with a single editor right up to very large websites with hundreds of pages, multiple editors, multiple design schemes, database hookups and more. It really is the complete solution, and there is no application yet asked of it that it has not been suitable for. Editors need no technical knowledge or experience beyond a general familiarity with computers and the web.