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Head-to-head · Cloud Storage Services

Microsoft OneDrive vs Amazon S3

  • Updated Oct 2026
  • Both researched from official sources
  • 3 checks side by side
Higher score Microsoft OneDrive #1 in Cloud Storage Services 9.2/10 Free plan Free plan✓ 2 of 3 features Visit OneDrive
Amazon S3 #5 in Cloud Storage Services 8.9/10 From $0.02/mo ✓ 0 of 3 features Visit Amazon S3

Microsoft OneDrive leads on 1 check, Amazon S3 on 0, and 2 are even. Who comes out ahead on the 3 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreMicrosoft OneDrive · 9.2/10
  • Free planonly Microsoft OneDrive
  • Most featuresMicrosoft OneDrive · 2 of 3

Microsoft OneDrive scores higher on our rubric for cloud storage services: 9.2 against 8.9 out of 10; our editors rank them #1 and #5.

Microsoft OneDrive offers free plan; Amazon S3 doesn't.

Microsoft OneDrive is the better fit for microsoft 365 users and low-cost storage. Amazon S3 is the better fit for developers and applications needing object storage.

  • Microsoft OneDrive fits best

    Microsoft 365 users and low-cost storage

  • Amazon S3 fits best

    Developers and applications needing object storage

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 Microsoft OneDrive 9.2/10 Visit ↗ Amazon S3 8.9/10 Visit ↗
At a glance
Editor score 9.2 8.9
Ranking #1 in Cloud Storage Services #5 in Cloud Storage Services
Best for Microsoft 365 users and low-cost storage Developers and applications needing object storage
Pricing model Free plan + paid Paid
Starting price — From $0.02/mo
Free plan ✓ (best) —
Free trial — —
Deployment Cloud, Desktop, Mobile Cloud
Platforms Web, Windows, macOS, iOS, Android Web
Integrations 5 integrations 8 integrations
Features Microsoft OneDrive 2/3 · Amazon S3 0/3
File versioning ✓ (best) Not checked yet
Zero-knowledge encryption Not checked yet Not checked yet
Business admin controls ✓ (best) Not checked yet
Specs
Storage limit 100 GB Not checked yet
File size limit 250 GB Not checked yet
Device platforms Windows, macOS, iOS, Android Not checked yet
Our review
Pros
  • Free plan plus $1.99 monthly entry tier
  • Syncs across web, Windows, macOS, iOS, and Android
  • Supports 250 GB files, version history, and recovery
  • Lifecycle rules, versioning, retention controls, and replication
  • REST API, SDK, CLI, and web console access
  • Integrations across Lambda, Athena, CloudFront, and AWS tools
Cons
  • The free plan includes only 5 GB of storage
  • Ransomware protection depends on eligible subscriptions
  • It does not provide zero-knowledge encryption
  • Paid-only service with usage-based billing
  • Pricing varies by region, storage class, requests, and data transfer
  • Access is centered on web and API-based workflows
Our verdict

Microsoft OneDrive is a cloud storage service for individuals, families, and organizations that need to back up, access, edit, share, and synchronize files across devices. It supports web, Windows, macOS, iOS, and Android, with real-time…

Read the review →

Amazon S3 is a cloud object storage service for organizing, protecting, and retrieving data in buckets. It is suited to developers and applications that need storage for data lakes, backups, archives, analytics, content delivery, or…

Read the review →
  1. Microsoft OneDriveCloud Storage Services 9.2Free plan
  2. Amazon S3Cloud Storage Services 8.9From $0.02/mo

Strengths and trade-offs

  • Microsoft OneDrive — where it wins

    • Free plan plus $1.99 monthly entry tier
    • Syncs across web, Windows, macOS, iOS, and Android
    • Supports 250 GB files, version history, and recovery

    Where it doesn't

    • The free plan includes only 5 GB of storage
    • Ransomware protection depends on eligible subscriptions
    • It does not provide zero-knowledge encryption
  • Amazon S3 — where it wins

    • Lifecycle rules, versioning, retention controls, and replication
    • REST API, SDK, CLI, and web console access
    • Integrations across Lambda, Athena, CloudFront, and AWS tools

    Where it doesn't

    • Paid-only service with usage-based billing
    • Pricing varies by region, storage class, requests, and data transfer
    • Access is centered on web and API-based workflows

More comparisons

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update