Ahrefs Saved US$400M in 3 Years by Not Going to the Cloud
"the cost of running 20 Ahrefs servers in their own data center is approximately $31,475 per month, while the cost of running an equivalent number of servers on AWS is approximately $136,416 per month" Wow, 77%! But this is such a hard argument to make to tech leaders today. They want to instantly scale up or down at will.
Here's the tracking-free version of OP's link:
https://tech.ahrefs.com/how-ahrefs-saved-us-400m-in-3-years-...
One thing i noticed is he didn't mention the cost of the engineers to support your own data center. That should go into the price too..