On closer review of the best content management systems available today, what we have is a dissimilarly unique finding. Factually, WordPress is the easiest option to consider in a hurry. Technically, Drupal works perfectly in sync with enterprise-class websites while Joomla blends the best of both of course with limitations. Certainly, scoring one over the other is a tactically tough task.
However, if security is a decider to judge any CMS effectiveness, nothing beats Drupal. The open source web publishing platform is the darling of highly skilled developers who trust its simplicity to make sophisticated websites, preferably because of its robust security. Drupal has a dedicated fan base, an actively empowered community of developers, and it is increasingly gaining widespread popularity with the likes of White House, Greenpeace, Ubuntu are using Drupal development services for their CMS.
Read what makes Drupal the classic CMS serious folks consider, with special reference to its security features. Must read if your existing CMS is slowing down your website performance and you want a timely switch to a reliable alternative!