A web application is one more term for an internet site.
Each web application is separate from each various other. Most people that originate from cPanel often tend to put every little thing inside a folder and afterwards offer it to the public. Similarly, each internet application is divided into its very own folder, with its very own data source and approvals, sandboxed, as well as offered to the public.
Sandboxing each web app permits it to be safe and also shielded in its own right. If one of your sites is compromised, the others will be entirely risk-free.