Amazon CloudFront Adds mTLS Passthrough Mode for Origins
🔐Amazon CloudFront now supports passthrough mode for viewer mutual TLS (mTLS), enabling customers to forward client certificate chains directly to their origin for validation instead of requiring CloudFront to perform certificate verification. In passthrough mode CloudFront forwards every request and the full client certificate chain to the origin and does not cache responses, ensuring end-to-end authentication is enforced by the origin. Connection functions remain available so you can inspect or transform connection-level data before it reaches your origin. CloudFront mutual TLS (viewer) passthrough is available at no additional cost.
