Cloudflare R2 S3-compatible object storage with zero egress fees, built on Cloudflare's global network. When to Use - Storing user uploads, media files, backups, or static assets. - Replacing AWS S3 to eliminate egress costs for read-heavy workloads. - Serving files at the edge via Workers or public bucket access. - Building multi-cloud storage that avoids vendor lock-in (S3 API compatible). - Storing ML model artifacts, training data, or inference results. Prerequisites - Cloudflare account with R2 enabled (dashboard R2 subscribe). - Wrangler CLI v3+ installed: . - Authenticated via or . - F…