What would your stack cost somewhere else?
Answer eleven questions about what you run. You get a costed target architecture and, if you tell us your current bill, the difference. No signup, no provider token, and nothing you type is stored.
The operations work is priced in and subtracted. A managed platform's bill includes somebody patching the kernel; a VPS bill does not, and a savings number that ignores that is a number you should not trust.
What comes after the number
This is arithmetic on what you typed. The free assessment reads your actual account, so it finds the things you would not have thought to enter. If the numbers still hold up after that, the migration plan is the paid deliverable: the target architecture, the Terraform, and a cutover runbook, in a repo you own.