Day 12: Deploy your frontend (with authentication)
· 48 min read
What you'll learn
How to build a secure frontend with Vite, React and Cognito authentication, then deploy it to S3 + CloudFront
Protect your app from unauthorized use
Days 9-11: You built the infrastructure
Today: We build the protected frontend
Here's the critical security issue:
When you deploy your AI calling agent:
https://app.yourdomain.com
→ Publicly accessible
→ Anyone can use it
→ Could rack up huge OpenAI/Twilio bills
This is not acceptable.
What you need: