Content management system or CMS is an application that helps you create and manage a website with a more user-friendly interface with no coding necessary. Content Management systems are not just for websites, they can be used for applications and other software as well according to Sitecore.
Building a website with a content management system and coding a website by hand using HTML/CSS look differently. According to bemarketing.com here are some of the pros and cons of both methods. Some of the pros to using CMS are its easier to keep things organized, CMS has add-ons that help to make the website much more personalized, and You can make a dynamic sitemap and a website structure which will make it easy for search engines to crawl your site which makes your website more SEO friendly. Some of the cons of CMS are though there are many things you can do with CMS it’s still not as inclusive as HTML would be and though it is more user friendly you will still need some knowledge of how to set up the website and may even need to get some outside help. Some pros of HTML/CSS are that the Website is more secure and harder to hack then CMS sites usually are, and you can design your website exactly as want it since you have complete range and control. Some cons to HTML/CSS are you must code the website so the initial setup will take longer and be more intricate, along with the fact that over time older versions of HTML can become obsolete and result in diminished SEO over time. Currently the best practice when creating a website is dependent on what you are needing and looking for in a website, either HTML or a CMS can work.
CMS is impacting the web design industry by making websites easier and quicker to make with a faster turnaround time which can make a web designer more money according to Hongkiat. People can surely pick up and make their own website with a CMS, but there will always be a need for both traditional HTML websites and the knowledge and know-how from web designers even if they use are using a CMS to create the website.