Learn about why we should use HTTPS to secure our websites, some of the historical barriers to HTTPS, and how you can use LetsEncrypt to make it happen. Additionally, learn how to optimize your configuration for maximum security. What ciphers and protocol combinations to use. How Diffie-Hellman Key Exchange enables forward secrecy. How to configure Strict Transport Security (STS), STS preloading, OCSP stapling, and key pinning to enhance security. We will go through some example configurations for NGINX and Apache.