My main use case for Debian includes numerous applications, ranging from running web applications on AWS EC2 instances using Debian 12, and Debian 12 being the bedrock of Linux Mint, which I run on a personal Mac that is really old. Because of using Linux Mint, it has brought the laptop back to life and it is quick enough to use in a modern way even though the laptop is over a decade old.
I use Debian 12 for building a web application which runs on EC2 instances, and since Debian 12 is free on AWS, I believe it was made to be optimized for EC2 usage. Debian is one of the biggest and oldest Linux distributions, so it is one that came to mind when I was deciding which machine image to run.
Debian is deployed in my organization through the public cloud. I use Debian through the AWS Marketplace, but it is actually used on EC2 instances in AWS, which you would purchase through the EC2 page of the AWS console.