Amazon S3 VS Azure Blob Storage
AWS · Microsoft · Cloud Storage · Updated Jul 26, 2026
Side-by-Side Breakdown
| Feature | Amazon S3 | Azure Blob Storage | Winner |
|---|---|---|---|
| Storage /GB/mo | $0.0230/GB/mo | $0.0180/GB/mo | ✓ Azure Blob Storage |
| Egress /GB | $0.0900/GB | $0.0870/GB | ✓ Azure Blob Storage |
| Provider | AWS | Microsoft | — |
| Category | cloud-storage | cloud-storage | — |
| redundancy | 3× AZ | LRS/ZRS | |
| durability | 11 nines | 11 nines | |
| s3 compatible | Native | Partial | |
| free tier | 5GB/mo | 5GB/mo | |
| Overall Winner | 🏆 | Azure Blob Storage |
Amazon S3 vs Azure Blob Storage: Quick Summary
Azure Blob Storage is the more affordable choice. Amazon S3 costs $0.0230/GB/mo vs Azure Blob Storage at $0.0180/GB/mo (Storage /GB/mo). Azure Blob Storage is 27.8% cheaper. Pricing verified as of Jul 26, 2026 — always confirm on the provider's official pricing page before committing.
Amazon S3 vs Azure Blob Storage: Full Pricing Analysis
On headline price, Azure Blob Storage is the cheaper option: $0.0180/GB/mo versus $0.0230/GB/mo for Amazon S3 (Storage /GB/mo) — about 22% less. At a scale of one million per GBmonth, that difference works out to roughly $18,000.00 with Azure Blob Storage against $23,000.00 with Amazon S3. For high-volume workloads that gap compounds quickly, so if your usage is predictable and large, Azure Blob Storage is the more economical default.
Price isn’t the whole story, though. Amazon S3 (AWS) sits at the higher price point, which is often justified by broader features, stronger delivery/SLA guarantees, or a more mature developer experience. If you need those capabilities, the premium can pay for itself. Choose Azure Blob Storage when cost-per-unit is the priority and your requirements are straightforward; choose Amazon S3 when reliability, tooling, or ecosystem fit matter more than shaving the per-unit rate.
Beyond price, the two differ on redundancy (3× AZ vs LRS/ZRS), durability (11 nines vs 11 nines), s3 compatible (Native vs Partial) and free tier (5GB/mo vs 5GB/mo). Check those specs against your actual requirements before committing — the cheaper option is only the better deal if it also meets your technical needs.
Pricing shown is Storage /GB/mo as published by each provider and verified Jul 26, 2026. Providers change prices and introduce free tiers and volume discounts frequently — always confirm the current rate on AWS’s and Microsoft’s official pricing pages before you commit.