A developer has engineered a P2P file sharing tool that bypasses server storage and egress fees entirely. By leveraging WebRTC, files transfer directly between browsers, while Cloudflare Workers and Durable Objects handle the necessary signaling and connection state. This architecture is particularly significant for developers facing high bandwidth costs when sharing large files like videos, as it decouples transfer volume from server expenses.

The solution addresses complex reconnection logic and NAT traversal using Cloudflare's free STUN service, offering a cost-effective alternative to traditional centralized storage. While it forgoes TURN servers for maximum cost efficiency, it presents a powerful model for building scalable, real-time applications on the edge.