A lot of times, you might not be in need of a custom site or service and a CMS would be able to solve your problems. A CMS or “Content Management System” is a pre-built web app which can be used to manage various types of content. If you want to run a blog with or without a set of products to sell, or want to manage a sophisticated site explaining your ever-growing set of services, a CMS should be able to get your job done.