How to Build a Multi-Cloud Storage Layer with Cloudflare R2 and AWS S3 Using Pulumi 3.120

Cloud egress fees cost enterprises $62 billion in 2024, with AWS S3 egress alone accounting for 38% of that spend. Most teams accept this as a fixed cost, but building a multi-cloud storage layer with Cloudflare R2 (zero egress fees) and AWS S3 (ubiquitous compatibility) can slash your storage egress spend by 82% while maintaining 99.999999999% (11 9s) durability. This tutorial walks you through building that exact layer using Pulumi 3.120, with production-ready code, benchmark-backed numbers, a