Question

A company serves a single-page web application through a CloudFront distribution backed by an Application Load Balancer origin. During brief backend deployments, the origin returns HTTP 502 and 503 errors, and end users see raw CloudFront error XML. The team wants CloudFront to instead return a friendly maintenance HTML page for these errors and to stop hammering the origin with repeated requests during the outage window. Which configuration should the SysOps administrator implement?

Accepted Answer

Add a custom error response in the distribution for HTTP 502 and 503, pointing to an HTML object in the origin, and set an Error Caching Minimum TTL greater than zero

Answer

Create a cache behavior that forwards all query strings and cookies so CloudFront can regenerate the page on each request

Answer

Configure the ALB health check to return a static maintenance page when targets are unhealthy

Answer

Enable origin failover with a second ALB origin group so CloudFront retries the error responses immediately