The frontend is not a security boundary
Notes on AWS Builder Center’s frontend security article: enforcement belongs behind the frontend, not in it.
I came across AWS Builder Center’s article, “Your Frontend App Isn’t as Secure as You Think”, and found it particularly relevant from a DevOps/Cloud perspective.
My biggest takeaway: the frontend is not a security boundary.
A browser is controlled by the user, so hiding buttons, exposing “frontend secrets” or relying on client-side authorization doesn't provide real security.
The actual enforcement needs to happen behind the frontend: authentication, authorization, input validation, least-privilege IAM, secure secret management, and proper observability.
It also made me think about a simple question I should ask more often:
What happens if the frontend is completely compromised?
If the answer is “the attacker can access our AWS resources,” the architecture needs another look.
Curious how others approach this in their systems, what security boundary do you trust the most?