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Object Storage comparison · 2026
Cloudflare R2 edges out Amazon S3 in this Object Storage comparison, scoring 91 against 81 across our seven scored dimensions. Amazon S3 leads on Ecosystem (98 vs 82), while Cloudflare R2 has the edge on Egress Cost (100 vs 40). The two are closest on Developer UX, where the gap is just 0 points. Both offer a free tier, making either a low-risk starting point. Use the radar chart and dimension table below to find which fits your specific priorities best.
Amazon S3
The original and most widely adopted object store
81/100
Cloudflare R2
S3-compatible storage with zero egress fees
91/100
Radar comparison
Amazon S3
81
Cloudflare R2
91
Durability
Data redundancy guarantees and SLA-backed durability.
Price / Value
Storage cost per GB and egress fees.
Performance
Upload/download throughput and latency.
Developer UX
SDK quality, S3 API compatibility, and setup speed.
Egress Cost
Cost of transferring data out — often the hidden expense.
Ecosystem
CDN integration, multi-region support, and tooling.
Overall Score
Based on our independent scoring across 6 dimensions, Cloudflare R2 scores 91/100 overall versus Amazon S3's 81/100 — a 10-point margin. Cloudflare R2 leads on Durability in particular. That said, Amazon S3 may still be the right choice if the dimensions where it scores higher match your specific priorities — the radar chart above shows the full profile side by side.
Both Amazon S3 and Cloudflare R2 offer a free tier, so entry-level cost is not a differentiating factor. Compare the feature and usage limits of each free plan to see which gives you more headroom before a paid upgrade is needed.
Amazon S3 scores higher on Ecosystem — 98/100 versus 82/100 for Cloudflare R2. If ecosystem is your primary decision criterion, Amazon S3 is the stronger choice in this head-to-head.
Switching between object storage tools is generally possible but involves migration effort: exporting your data or configuration from Amazon S3, re-importing or reconfiguring in Cloudflare R2, and updating any API integrations or environment variables in your codebase. The effort scales with how deeply embedded the tool is in your stack. Test Cloudflare R2 on a non-production project first before migrating.
Amazon S3 (81/100) is the better fit for teams who prioritise durability — its strongest dimension — and who want a free entry point. Cloudflare R2 (91/100) is the better fit for teams who prioritise egress cost and want a free entry point. If both dimensions matter equally, the overall score winner (Cloudflare R2) is the safer default choice.
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