If you need to install module on other node, you make a fun which installs that module (typically one function call) and execute it on other node, that fun is a

If you need to install module on other node, you make a fun which installs that module (typically one function call) and execute it on other node, that fun is automatically sent and executed where you want it. It's like using remote shell (ssh), but your program is automatically sent to remote server.