Why do we need a backend in the first place?

"Why do we need a backend in the first place? Why not just talk to database directly?"

Short answer: Because software is not a vending machine.

The backend exists to do the boring, unglamorous work that actually keeps systems alive:

• Validation
• Authentication & authorization
• Business logic
• Security
• Performance optimization
• Rate limiting
• Data consistency
• Auditing
• Integration with other services

The frontend's job is to talk to humans. The database's job is to store data. The backend's job is to stop both of them from doing something stupid independently.

Removing the backend doesn't make your app "simpler". It makes it fragile, insecure, and one bad request away from becoming a public data leak.

If your architecture only works as long as users behave perfectly, congratulations, you built a demo, not a system.

Backend development isn't about adding complexity. It's about controlling it.