"aws""serverless""cognito"
10 min readAWS Cognito: Stop Rolling Your Own Auth (I Learned This the Hard Way) 🔐⚡
I once spent three weeks building a custom JWT auth system for our serverless backend. It had refresh token rotation, device tracking, forgot-password flows, and at least four security vulnerabilities I didn't know about until a penetration tester found them. Then someone showed me Cognito. I cried a little.
Mar 01, 2026