no cloud: 37signals to save $10m/5 years?

deciding "from first principles", by doing the math...

by DHH, creator of Ruby on Rails, the one that fought Apple app store and won... 

There is a reason why AWS is by far most profitable part of Amazon, 
and Azure most profitable part of Microsoft...

Basecamp-maker 37Signals says its “cloud exit” will save it $10M over 5 years - Ars Technica

"when 37Signals decided to pull its seven cloud-based apps off Amazon Web Services in the fall of 2022, it didn't do so quietly or without details. Back then, Hansson described his firm as paying "an at times almost absurd premium" for defense against "wild swings or towering peaks in usage." In early 2023, Hansson wrote that 37Signals expected to save $7 million over five years by buying more than $600,000 worth of Dell server gear and hosting its own apps."

Late last week, Hansson had an update: it's more like $10 million (and, he told the BBC, more like $800,000 in gear).

David Heinemeier Hansson - Wikipedia

also known as DHH, is a Danish software engineer, programmer, writer, entrepreneur, and racing driver. He is the creator of Ruby on Rails, a web framework written in Ruby.[1] He is also a partner and chief technology officer at the web-based software development firm 37signals.