Azure Blob Storage vs Cloudflare R2
A detailed comparison to help you choose between Azure Blob Storage and Cloudflare R2.
Quick Verdict
3.9/5
Azure Blob Storage
0 reviews
4.4/5
Cloudflare R2
0 reviews
Cloudflare R2 is rated higher (4.4 vs 3.9). Microsoft Azure's object storage service for storing massive amounts of unstructured data like documents, images, and backups. Built for enterprises needing reliable, cost-effective cloud storage with compliance options. Cloudflare R2 is S3-compatible object storage with zero egress fees — ever. $0.015/GB/month storage, no data transfer costs. Tightly integrated with Cloudflare Workers and CDN.
Azure Blob Storage Scalable cloud object storage for unstructured data at enterprise scale | Cloudflare R2 Zero egress S3 storage on Cloudflare's network | |
|---|---|---|
| Overview | ||
| Rating | 3.9 (0 reviews) | 4.4 (0 reviews)✓ |
| Pricing model | usage-based | freemium (free tier plus usage-based pricing) |
| Starting price | From $0.0184/mo | Free tier available✓ |
| Best for | Microsoft-centric enterprises and Azure-native analytics/backup workloads needing compliant, tiered object storage with global residency | Teams serving media, assets, downloads or backups where egress dominates their current object storage bill — especially those already building on Workers or Pages. |
| Features | ||
| IPv6 | ✓ | |
| DDoS protection | ||
| Automated backups | ||
| Snapshots | ||
| Managed option | ||
| Bare metal | ||
| GPU available | ||
| S3-compatible | ||
| Hourly billing | ||
| Free tier | ||
| Data-center locations | ||
| Regions | — | Global — Cloudflare network |
| Tags | ||
| Tags | free tiers3 compatibleapi accesseu datacenterus datacenterapac datacenterterraform provider | free tiers3 compatibleeu datacenterus datacenterapac datacenterapi access |
| Visit Azure Blob Storage → | Visit Cloudflare R2 → | |
Azure Blob Storage
Pros
- + Four cost-optimized access tiers with fully published per-GB and per-operation prices
- + Mature redundancy ladder (LRS through RA-GZRS) with 11 nines claimed durability on LRS
- + Deep Azure integration: Entra ID auth, Private Link, lifecycle management, immutable storage
- + Reserved capacity discounts up to roughly a third on committed storage
- + Global footprint with EU, US, and APAC data residency plus sovereign clouds
Cons
- - No native S3 API — S3-designed tooling needs a third-party proxy
- - Egress, retrieval, and early-deletion fees often dwarf the capacity cost
- - Portal, RBAC, and account-kind surface area is a real learning curve
- - Cool/Cold/Archive tiers carry lower availability targets (99%) and minimum retention periods
- - SLA is 99.9% with capped service credits, not an availability guarantee
Cloudflare R2
Pros
- + Zero egress fees on all storage classes — no data transfer bill at all
- + Standing free tier: 10 GB-month storage, 1M Class A and 10M Class B ops monthly
- + S3-compatible API works with existing SDKs and migration tooling
- + Published durability (11 nines) and a 99.9% monthly uptime SLA with credits
- + Binds directly to Workers, Pages and public buckets with no cross-product egress
Cons
- - S3 feature surface is thinner — no replication topology, simpler lifecycle tooling
- - Class A operations at $4.50/million make write-heavy workloads pricier than storage-only math
- - Infrequent Access has a 30-day minimum storage duration and retrieval fees
- - Real lock-in sits in Workers-based processing around buckets, not the storage itself
- - Not suited to analytics-style scans or small-object high-churn data
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