WordPress is an open source platform, you own both the content and the underlying platform your website is displayed on. Compared to proprietary software solutions this is a significant feature that WordPress shares with other open source CMS like Drupal and Magento.
Allow you to control the level of access a user or group of users can have on your WordPress website. Administrators manage the site, editors work with content, authors and contributors write that content, and subscribers have a profile that they can manage.
WordPress allows you to create a draft of your new content, view it as it will appear when live, and once you are happy allows you to publish the content immediately on your website.
Content Management System
The WordPress Content Management System, allows you to add content through a powerful WYSIWYG (what you see is what you get) editor. The interface allows images to be uploaded. links to be created and styles to be controlled of all content.
Word Press offers a library of thousands of plugins and widgets that allow you to extend core functionality. Some plugins are free while others are paid for.
Search Engine Optimisation
WordPress is built with SEO in mind, a website built on the WordPress content management system will index well within the major search engine indexes - Google and Bing