Let's Encrypt is a free, automated, and open certificate authority provided by the Internet Security Research Group. In this tutorial, you use Certbot, a free, open-source tool used to streamline the installation process of Let's Encrypt SSL certificates for already configured web servers. SSL certificates are used to secure web traffic and allow HTTPS on websites. Before setting up Certbot, you should: * [Deploy a CentOS 7 cloud server at Vultr](https://my.vultr.com/deploy/). * [Install and con......