Renewing Let's Encrypt SSL Certificates With Certbot On AWS EC2

Yesterday, we talked about setting up a personal development environment, and of course, we have to consider cost factors. So today, I revisited the process of renewing Let's Encrypt SSL certificates.
In the past, I often used the DNS-01 validation method. However, if we want to automate the process, it requires connecting to the domain management service's API and writing some code. Moreover, in most cases, clients are unable to provide access to such APIs, which leads to frequent manual configurations and high communication costs.
If we're using AWS EC2 as the web server, and assuming the ap...