What is a CMS?
A CMS (Content Management System) is a web application that can be used to create or, as the name suggests, manage digital content without having to know how to write HTML code. This is done by adding, editing, or deleting content that is to be published on a your website. The most popular option is WordPress but there are a couple of others that work with CiviCRM in a more integrated manner. Backdrop and Drupal 7.