Azure Blob Storage vs Cloudflare R2Storage Benchmark Comparison
Azure Blob Storage was faster in both storage measurements with a speed verdict.
- Shared storage measurements
- 3
- With a speed verdict
- 2
- Last run
- October 30, 2026
Scorecard
Median of each storage measurement's primary metric; lower is better. Medians within 5% count as roughly even, and a storage measurement gets no speed verdict when either provider completed fewer than 50% of runs.
| Benchmark | Azure Blob Storage | Cloudflare R2 | Result | Ratio |
|---|---|---|---|---|
| Upload (10 MB) Upload time · Run October 30, 2026 | 141ms 100% success | 1295ms 100% success | Azure Blob Storage faster | 9.20x |
| Download (10 MB) Download time · Run October 30, 2026 | 136ms 100% success | 421ms 100% success | Azure Blob Storage faster | 3.10x |
| Snapshot create Snapshot create time · Run October 30, 2026 | 1.93s 98% success | No timing data 0% success | No verdict No speed verdict because Cloudflare R2 completed 0% of runs, fewer than the 50% required. | — |
Upload (10 MB)
Run October 30, 2026Time to upload a 10 MB file to the provider, measured in the 10 MB storage lifecycle benchmark.
Upload time
Azure Blob Storage
100% successAzure Blob Storage had a 9.20x lower median upload time (141ms vs 1295ms for Cloudflare R2).
Median upload time over time
31 runs from June 28, 2026 to October 30, 2026.
Download (10 MB)
Run October 30, 2026Time to download the same 10 MB file back, measured in the 10 MB storage lifecycle benchmark.
Download time
Azure Blob Storage
100% successAzure Blob Storage had a 3.10x lower median download time (136ms vs 421ms for Cloudflare R2).
Median download time over time
31 runs from June 28, 2026 to October 30, 2026.
Snapshot create
Run October 30, 2026Time to create a snapshot of a bucket holding a small dataset of 10 objects.
Snapshot create time
Azure Blob Storage
98% successCloudflare R2
0% successNo speed verdict because Cloudflare R2 completed 0% of runs, fewer than the 50% required.
Median snapshot create time over time
16 runs from June 30, 2026 to July 24, 2026.
Methodology
- One workload, every provider. The same script, payload, and model hit every provider, addressed the way its own API expects. Nobody gets a tuned or special path.
- Repeated on a schedule. Every suite runs many iterations per provider, automated on a recurring schedule, so results reflect steady state rather than one lucky request.
- Raw results published. Every run is committed as JSON to the public benchmarks repo, next to the code that produced it. Nothing is cherry-picked or held back.
- How this comparison is built. Each benchmark compares the two providers' medians; results within 5% count as roughly even. A comparison is published only when both providers completed the 10 MB storage lifecycle benchmark reliably: at least 50% success for each provider, in benchmark runs from the last 30 days.
Frequently asked questions
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Azure Blob Storage was faster in both storage measurements with a speed verdict. In Upload (10 MB) (October 30, 2026), Azure Blob Storage had a median upload time of 141ms versus 1295ms for Cloudflare R2, 9.20x faster. In Download (10 MB) (October 30, 2026), Azure Blob Storage had a median download time of 136ms versus 421ms for Cloudflare R2, 3.10x faster.