Cloudflare R2 is a cloud storage service that offers a free tier as well as a usage-based pricing model. The free tier provides 10 GB of storage per month, with 1,000,000 write operations and 10,000,000 read operations. For more extensive needs, the usage-based pricing comes into play. It charges $0.015 per GB for storage, $4.50 per million write operations, and $0.36 per million read operations. This flexible pricing structure makes Cloudflare R2 a suitable option for both small-scale users who are just starting out and larger enterprises with more substantial storage and operation needs.