One of the biggest misconceptions in cloud migrations is the assumption that existing systems can be "lifted to the cloud" virtually unchanged. The reality: Adopting architectural principles from the data center era results in a technically functional but economically disastrous system.
Because the cloud isn't just "external servers," but a completely different operating model. Billing is based on usage, not capacity. Scaling is dynamic, not static. Network access, API calls, and logs suddenly cost real money.
I've seen many such projects—and they almost always end up costing me dearly. Not functionally, but financially.
Companies need experience here. A junior developer can write code, but rarely understands the scaling and billing mechanisms of the major cloud providers. That's precisely why cloud migration architecture should never be designed by beginners.
As a Senior Backend Developer, I support companies in redesigning their systems, not just migrating them. The goal: to leverage the true benefits of cloud computing, instead of expensively simulating data center architecture.
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