Amazon S3 vs Backblaze B2
A detailed comparison to help you choose between Amazon S3 and Backblaze B2.
 Amazon S3 Scalable object storage for any data size or type | Backblaze B2 S3-compatible storage at a quarter of AWS S3 pricing | |
|---|---|---|
| Overview | ||
| Rating | 4.2 (198 reviews) | 4.5 (110 reviews)✓ |
| Pricing model | freemium | freemium |
| Starting price | Free tier available | Free tier available |
| Best for | Teams building on AWS who need reliable, scalable object storage for backups, data lakes, static content, or application data. | Developers and startups who need S3-compatible storage at the lowest possible price and don't require EU data residency |
| Specifications (entry plan) | ||
| CPU cores | — | 0 vCPU |
| RAM | — | 0 GB |
| Storage | — | 0 GB |
| Bandwidth | — | 0 TB/mo |
| SLA uptime | — | 99.9% |
| Data-center count | — | 2 |
| Features | ||
| IPv6 | ||
| DDoS protection | ||
| Automated backups | ||
| Snapshots | ||
| Managed option | ||
| Bare metal | ||
| GPU available | ||
| S3-compatible | ||
| Hourly billing | ||
| Free tier | ✓ | |
| Data-center locations | ||
| Regions | — | United States |
| Tags | ||
| Tags | free tiers3 compatibleapi accessus datacentereu datacenterapac datacenterterraform provider | free tiers3 compatibleus datacenterapi access |
| Visit Amazon S3 → | Visit Backblaze B2 → | |
Amazon S3
Pros
- + Store unlimited data with predictable per-GB pricing
- + Achieve 99.999999999% durability through automatic redundancy
- + Integrate directly with EC2, Lambda, RDS, and other AWS tools
- + Use lifecycle rules to automatically move data to cheaper storage tiers
- + Control access granularly with IAM policies and bucket policies
Cons
- - Data transfer out of AWS incurs egress charges that can add up quickly
- - API requests have per-1000-request pricing; high-frequency access patterns get costly
- - Requires AWS account setup and understanding of bucket configuration for security
Backblaze B2
Pros
- + $6/TB/month — significantly cheaper than AWS S3
- + Free egress when paired with Cloudflare
- + S3-compatible API — drop-in replacement
Cons
- - US-only datacenters — no EU data residency option
- - No EU-based storage
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