Purpose / Use Cases for JBR11? (JetBrains Runtime)

Can anyone tell me the purpose of JBR11 vs. other options? As a person relatively new to Java, I have found the setup requirements for writing a simple program in Java to be significantly more complex than C, C++, or JavaScript... Even setting up PHP on a linux server seemed easier, because there was more clear information available that just worked.

I am wondering if IntelliJ with JBR is an attempt to resolve that complexity by making a single "Install and it works" package. Or if it has an entirely different purpose.

Thanks in advance.