Amazon S3 vs. Azure Blob Storage

Which is the best cloud object storage provider for you?

April 7, 2023

Written by
Louis-Victor Jadavji, Cofounder of Taloflow

Who Should You Choose, and Why?

âś‹ Stick with your principal cloud provider

If you are currently embedded in the Azure or AWS ecosystem for other reasons, there is very little reason to store your data on the other provider. It adds unnecessary complexity and both are similarly expensive for the raw cost of storing data.

🤔 Strongly consider Azure Blob Storage over Amazon S3 if

  • You use MBCS file formats or need Azure’s more durable object storage, which promises 16 9’s of durability in its Geo-Redundant Storage tier (GRS).
  • You want to use storage types that automatically replicate your data cross-region.

đź“ť Other Notes

  • Both platforms do exceptionally well compared to specialized storage providers in “eventing” (e.g., triggering AWS Lambda or Azure Functions off of storage events).
  • On Amazon S3, you can also replicate your data cross-region, but it's a feature that needs enabling and can double your raw storage cost.
  • Besides tiers, Azure has more varied types and versions of storage compared to AWS.


Amazon S3 is an object storage service offering industry-leading scalability, data availability, and performance for a wide array of use cases. Renowned for its durability, security, and scalability, Amazon S3 is designed to serve businesses of all sizes and across various industries. It provides straightforward storage management features, enabling users to organize data and configure finely-tuned access controls to meet specific business, organizational, and regulatory requirements.
Azure Blob Storage

Azure Blob Storage

Azure Blob Storage shines for use cases where you are operating within the Azure or Microsoft-file (MBCS) ecosystem, as well as scenarios involving large file sizes. As a part of the Microsoft Azure suite of services, Blob Storage offers a cost-effective and scalable solution for storing, accessing, and managing data on the cloud. Its deep integration with other Azure services makes it an attractive choice for those already invested in or migrating towards the Azure platform.
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  • The data stored in the Azure GRS tier that is replicated to other regions is only available to you in a failover state.
  • Azure's Geo-redundant Storage (GRS) only replicates your data in a SINGLE zone of two different regions, whereas Azure's Geo-zone Redundant Storage (GZRS) replicates within 3 zones in the primary region and 1 in the secondary region.
  • Azure Blob Storage Archive requires a minimum retention period of 180 days for files.

Feature Comparison







Use Case Suitability

Pricing Comparison

Integration With Other Services

Not all object storage providers have the integrations or compatibility with tools like IPFS, Filezilla or specific CDN providers.

Compliance Requirements

Compliance with standards like PCI DSS, HIPAA, ISO 27001, FedRAMP and more have been tracked and recorded.

Learn about Cloud Object Storage

Learn more about Cloud Object Storage from our deep dive posts created with the help of the leading industry analysts in the field.

About the Author

Louis-Victor Jadavji (or "LV") is a recognized leader in the cloud services industry. He's helped 50+ digital native companies like ModusBox, Later, and NS1 choose the right cloud stack for their applications. His work has been featured in Forbes (30 Under 30 All-Star), HuffPost, The New York Times, The Globe and Mail, and Inc. Magazine.

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