JS Libraries and Frameworks
Backend Developers develop backend functionality for web applications, including APIs, code to interact with databases and libraries, business processes, and more.
Web hosting allows web developers to store files like CSS files, HTML files, JS files, photos, and databases on a server and access these resources through the Internet.
Version Control System
Web developers must know how to use version control systems to track, regulate, and revise code changes, like Git that help identify and solve problems quickly.
Check Out the Link Below for More Details on Web Developer's Skills.