Streamlining SSH configuration

I edited my ~/.ssh/config file using Vim by doing

$ vim ~/.ssh/config

Here is my ~/.ssh/config file, me logging into my account using just the alias I chose with an ssh command, and me copying a file using just the alias I chose with an scp command.

Terminal output

My ~/.ssh/config file contains what I assume is the alias (ieng6 in my case) after Host and then HostName and User from the SSH URL <User>@<Hostname> I had used before.

To log in and copy files, I can use the ssh and scp commands I have used before, but replace all mentions of cs15lwi22asy@ieng6.ucsd.edu with just ieng6, my alias.