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Head-to-head · Object Storage Services

Alibaba Cloud Object Storage Service (OSS) vs Backblaze B2 Cloud Storage

  • Updated Oct 2026
  • Both researched from official sources
  • 5 checks side by side
Higher score Alibaba Cloud Object Storage Service (OSS) #3 in Object Storage Services 9.1/10 Free plan · paid from $0.00/mo Free plan✓ 4 of 4 features Visit site
Backblaze B2 Cloud Storage #6 in Object Storage Services 8.8/10 Free plan Free plan✓ 4 of 4 features Visit Backblaze

Alibaba Cloud Object Storage Service (OSS) leads on 0 checks, Backblaze B2 Cloud Storage on 0, and 5 are even. Who comes out ahead on the 5 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreAlibaba Cloud Object Storage Service (OSS) · 9.1/10
  • Free planboth

Alibaba Cloud Object Storage Service (OSS) scores higher on our rubric for object storage services: 9.1 against 8.8 out of 10; our editors rank them #3 and #6.

Alibaba Cloud Object Storage Service (OSS) is the better fit for low-cost S3-compatible storage. Backblaze B2 Cloud Storage is the better fit for low-cost storage and backup integrations.

  • Alibaba Cloud Object Storage Service (OSS) fits best

    Low-cost S3-compatible storage

  • Backblaze B2 Cloud Storage fits best

    Low-cost storage and backup integrations

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature Alibaba Cloud Object Storage Service (OSS) 9.1/10 Visit ↗ Backblaze B2 Cloud Storage 8.8/10 Visit ↗
At a glance
Editor score 9.1 8.8
Ranking #3 in Object Storage Services #6 in Object Storage Services
Best for Low-cost S3-compatible storage Low-cost storage and backup integrations
Pricing model Free plan + paid Free plan + paid
Starting price $0.00099/mo —
Free plan ✓ ✓
Free trial — —
Deployment Cloud, Desktop, Mobile Cloud
Platforms Web, Windows, macOS, Linux, iOS, Android Web
Integrations 8 integrations 8 integrations
Features Alibaba Cloud Object Storage Service (OSS) 4/4 · Backblaze B2 Cloud Storage 4/4
S3 compatibility ✓ ✓
Object versioning ✓ ✓
Lifecycle rules ✓ ✓
Object immutability ✓ ✓
Specs
Max object size Not checked yet 10000 GB
Replication scope Cross-region Cross-region
Our review
Pros
  • Lowest listed starting price with a free plan
  • Storage classes from Standard to Deep Cold Archive
  • Versioning, lifecycle rules, WORM retention, and replication
  • 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
  • Pricing varies by region, storage class, billing method, and usage
  • Not offered as open-source software
  • Best ecosystem fit is centered on Alibaba Cloud integrations
  • 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

Alibaba Cloud Object Storage Service (OSS) stores files and other data as objects in buckets. It is designed for websites, mobile applications, backups, archives, data lakes, analytics, and media workloads. OSS supports web, desktop,…

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 →
  1. Alibaba Cloud Object Storage Service (OSS)Object Storage Services 9.1Free plan · paid from $0.00/mo
  2. Backblaze B2 Cloud StorageObject Storage Services 8.8Free plan

Strengths and trade-offs

  • Alibaba Cloud Object Storage Service (OSS) — where it wins

    • Lowest listed starting price with a free plan
    • Storage classes from Standard to Deep Cold Archive
    • Versioning, lifecycle rules, WORM retention, and replication

    Where it doesn't

    • Pricing varies by region, storage class, billing method, and usage
    • Not offered as open-source software
    • Best ecosystem fit is centered on Alibaba Cloud integrations

  • 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
  • Alibaba Cloud Object Storage Service (OSS)9.1/10 · Free plan · paid from $0.00/mo

    A low-cost object storage service with broad lifecycle, replication, and retention controls.

    Visit siteFull 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 →

More comparisons

All object storage services comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update