Assuming you are speaking about content management system the development with framework is eventually is more expensive and in the longer run when compared pre-built CMS development and customization it proves economical. But, for specific business tasks pre-built CMS is better. Most of CMS have responded and have adopted to support for mobile responsiveness and SEO compatibility. Also, there are some CMS are free and are good to use. Thus CMS development is very popular in the industry.