Public Web App

Public web apps need strong edge controls, safe release patterns, frontend observability, and clear ownership for customer-facing impact.

Typical architecture

Required controls

• TLS, secure headers, and cache policy.
• Authentication and authorization for protected routes.
• CDN invalidation and rollback plan.
• Frontend error and web-vitals monitoring.
• Synthetic checks for critical flows.
• Dependency and package scanning.
• Data handling rules for browser-visible configuration.

Release guidance

Use preview deployments for pull requests and promote immutable builds where possible. Pair release flags with server-side authorization for sensitive behavior.

Readiness checks

Before production, confirm:

• Critical user journeys have synthetic or smoke coverage.
• Error reporting includes release, route, browser, and device context.
• CDN cache behavior is documented.
• Rollback and cache invalidation are tested.
• Accessibility and security header checks run in delivery.

Watchouts

• Client-side flags are not security controls.
• Browser-exposed environment variables are public.
• CDN caching can make rollback confusing.
• Frontend incidents often appear to users before backend alerts fire.