A web shell is like a remote control for your website. It's a computer program that can be used to access and administer your website from a remote location, like the internet. It helps you to manage your website more easily and keeps your website safe from hackers. With a web shell, you can perform a variety of tasks like creating new users, managing existing users, updating settings, checking logs, and more. It can also help you troubleshoot any issues you might be having with your website.