cdn-amzn-s3 Layer 1 path arrow - grey primary path arrow - grey primary Cloud CDN Shape Fill-1 Fill-1-Copy-2 Fill-1-Copy-3 Fill-1-Copy Fill-2 Fill-2-Copy-2 Fill-2-Copy-3 Fill-2-Copy Fill-9 Fill-10 Backend Service Backend Bucket Fill-3 Fill-5 Fill-7 Fill-8 Fill-9 Fill-18 Fill-19 Fill-20 Fill-21 Fill-22 Fill-23 zone internal - blue Instance Group / Zonal NEG Compute Engine Web Server Multiple Instances Stroke-21 Stroke-22 zone internal - blue Cloud Storage Storage bucket zone external - grey Custom (non-GCP) Origin in an Internet NEG zone external - grey Other cloud path arrow - grey primary path arrow - grey primary path arrow - grey primary path arrow - grey primary path arrow - grey primary path arrow - grey primary User VIP: 120.1.1.1 Cloud Load Balancing shape Fill-2 path arrow - grey primary Internet IT Admin Shopping cart for my website is on-premises in HTTPS with endpoint backend.example.com Fetch content for path /cart/id/1223515 from this on-premises endpoint HTTPS Connect to: S3 bucket FQDN Method: GET Protocol: HTTPS Host: backend.example.com Path: /cart/id/1223515 /cart/id/1223515 Backend Service path arrow - grey primary HTTPS path arrow - grey primary Internet backend.example.com S3 bucket