Resources:
- How To Secure Apache with Let’s Encrypt on Ubuntu 16.04
- How To Create a Self-Signed SSL Certificate for Apache in Ubuntu 16.04
- OpenSSL Essentials: Working with SSL Certificates, Private Keys and CSRs
- https://www.mitchcanter.com/lets-encrypt-ssl-amazon-aws/
- New – AWS Certificate Manager – Deploy SSL/TLS-Based Apps on AWS