Sorry, I couldn't get the link I visited but let me briefly explain.
Go to your hosts file located in 'C:\Windows\System32\drivers\etc'
Open with notepad and add your entries like this:
[The IP address of your AWS Server or full instance ID of your Amazon RDS] [Instance Name of your AWS Server]
e.g. 220.127.116.11 AMAZ-EC2ED4FV67
or ec2-3-56-77-128.east-us.amazonaws.com AMAZ-EC2ED4FV67
Save the file in a location e.g. documents/desktop folder without the '.txt' extension. You can do that by writing "hosts" as the file name when renaming; or unhide extensions for known file types in your folder/file view options, then remove the '.txt' extension.
Then copy the newly edited hosts file and paste in the original location to replace the old hosts file.
You can try searching how to edit hosts file on google or I can make a tutorial video to explain better.