“This allows them to get your app running in multiple regions for a lot less than it would cost to run it on Heroku.”
A former Heroku engineer says the platform has been in maintenance mode for years. The next-generation Dogwood stack never shipped after Salesforce bought it. Fly.io runs its own servers instead of reselling AWS, which is why it can undercut on price. Heroku’s magic didn’t die. Salesforce let it starve.