This session presents practical patterns for architecting secure, AI-ready frontends on AWS with Cognito-powered scalable auth. Topics include OIDC (auth code + PKCE), token/session hygiene, least-privilege IAM, and safely brokering AI endpoints via API Gateway/Lambda with rate limits, redaction, and cost guardrails. Attendees leave with a reference architecture, a hardening checklist, and a repeatable test strategy using Cypress Cloud.