Let AWS Manage Domain Purchased from GoDaddy

After you purchased a domain from GoDaddy, you would actually let your application hosting service to manage your domain.

ubuntu : auto restart application as a service after server reboot

You can simply use "nohup java -jar yourappname.jar &" to run an application at backend , but how to automatically start this application as a service after server reboot ?

aws : free ssl cert with let's encrypt

Let’s Encrypt (LE) is a free, automated, and open certificate authority (CA) so that we do not need to pay a cent for a SSL certificate.

AWS : Redirect HTTP to HTTPS

It has been a headache to enforce HTTPS for applications running on EC2 (Elastic Compute Cloud) , if you are encountering the same challenge then you should read below.