Amazon S3 vs Backblaze B2 Cloud Storage

Amazon S39.3Visit Backblaze B2 Cloud Storage8.8Visit

Higher score Amazon S3 #2 in Object Storage Services 9.3/10 From $0.02/mo ✓ 4 of 4 features Visit Amazon S3

vs

Backblaze B2 Cloud Storage #6 in Object Storage Services 8.8/10 Free plan Free plan✓ 4 of 4 features Visit Backblaze

• Amazon S3 fits best

  Enterprise AWS-native object storage

• Backblaze B2 Cloud Storage fits best

  Low-cost storage and backup integrations

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Side by side

Feature	Amazon S3 9.3/10 Visit ↗	Backblaze B2 Cloud Storage 8.8/10 Visit ↗
At a glance
Editor score	9.3	8.8
Ranking	#2 in Object Storage Services	#6 in Object Storage Services
Best for	Enterprise AWS-native object storage	Low-cost storage and backup integrations
Pricing model	Paid	Free plan + paid
Starting price	$0.02/mo	—
Free plan	—	✓ (best)
Free trial	—	—
Deployment	Cloud	Cloud
Platforms	Web	Web
Integrations	8 integrations	8 integrations
Features Amazon S3 4/4 · Backblaze B2 Cloud Storage 4/4
S3 compatibility	✓	✓
Object versioning	✓	✓
Lifecycle rules	✓	✓
Object immutability	✓	✓
Specs
Max object size	50000 GB (best)	10000 GB
Replication scope	Cross-region	Cross-region
Our review
Pros	Cross-Region Replication, versioning, and Object Lock retention controls Storage classes and lifecycle rules support archiving and deletion workflows REST API, SDK, CLI, console, and broad AWS service integrations	First 10GB of storage is always free S3 and native B2 APIs support application and backup workflows Object Lock, version retention, and cross-region replication included
Cons	No free plan is available Pricing varies by region, storage class, requests, and data transfer Its broad feature set is centered on AWS services and tooling	Feature breadth is narrower than the highest-ranked cloud platforms Free egress is limited to 3x average monthly storage The listed plan uses pay-as-you-go monthly billing
Our verdict	Amazon S3 is a cloud object storage service built around buckets for storing, organizing, protecting, and retrieving data. It suits organizations managing applications, data lakes, backups, archives, analytics workloads, and content… Read the review →	Backblaze B2 Cloud Storage is an always-hot object storage service for businesses, developers, IT teams, and individuals. It stores files in buckets accessible through a web interface, command-line tools, and APIs. The service is… Read the review →

Strengths and trade-offs

• Amazon S3 — where it wins

  • Cross-Region Replication, versioning, and Object Lock retention controls
  • Storage classes and lifecycle rules support archiving and deletion workflows
  • REST API, SDK, CLI, console, and broad AWS service integrations

  Where it doesn't

  • No free plan is available
  • Pricing varies by region, storage class, requests, and data transfer
  • Its broad feature set is centered on AWS services and tooling

• Backblaze B2 Cloud Storage — where it wins

  • First 10GB of storage is always free
  • S3 and native B2 APIs support application and backup workflows
  • Object Lock, version retention, and cross-region replication included

  Where it doesn't

  • Feature breadth is narrower than the highest-ranked cloud platforms
  • Free egress is limited to 3x average monthly storage
  • The listed plan uses pay-as-you-go monthly billing

• Amazon S39.3/10 · From $0.02/mo

  Deep AWS-native object storage with powerful controls, replication, and usage-based pricing.

  Visit Amazon S3Full verdict →
• Backblaze B2 Cloud Storage8.8/10 · Free plan

  A low-cost object storage option with strong backup, retention, and replication features.

  Visit BackblazeFull verdict →