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Amazon S3 vs Google Cloud Storage vs Microsoft Azure Object Storage comparison

 

Comparison Buyer's Guide

Executive Summary

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

ROI

Sentiment score
3.5
Users report positive ROI from Amazon S3 due to cost savings, scalability, data integrity, and advanced analytics benefits.
Sentiment score
1.0
Google Cloud Storage is reliable and efficient but lacks cost-saving benefits compared to Azure, with favorable return on investment.
Sentiment score
6.1
Microsoft Azure Object Storage provides scalability and cost benefits, but opinions vary on its market fit and strategic value.
Moving infrequently accessed data to cheaper classes like Glacier is beneficial for long-term storage at a lower cost.
 

Customer Service

Sentiment score
6.5
Amazon S3 support is knowledgeable and helpful, but users desire faster response times; documentation reduces support necessity.
Sentiment score
3.8
Google Cloud Storage's customer support is generally praised for responsiveness, though some users report slower response times and prefer forums.
Sentiment score
7.6
Mixed feedback for Azure support: praised for expertise, but needs faster resolutions and better service for non-premium users.
I rate the technical support from Amazon for S3 a ten out of ten.
An engineer is assigned based on the severity of the issue.
The technical support for Amazon S3 is rated ten out of ten.
We have self-studied to learn the services.
For SAP loads, Google provided a specific team, which resulted in good support.
If I want to change something on my resources or directly access it via the portal, there is not a service level agreement of 100%, and sometimes it's quite difficult to access.
 

Scalability Issues

Sentiment score
8.3
Amazon S3 is praised for its scalability, flexibility, and security, ideal for enterprise-level applications despite cost considerations.
Sentiment score
5.8
Google Cloud Storage is highly scalable, allowing easy capacity adjustments and stable performance for both small and large user bases.
Sentiment score
7.2
Microsoft Azure Object Storage is widely praised for its scalability, efficiently supporting large user bases and extensive data volumes.
Data placed in an S3 bucket is replicated across availability zones in a region, ensuring scalability and availability.
The level of scalability allows storage to automatically scale on demand, without the need for manual intervention.
Amazon S3's automatic scaling has benefited me, as I don't need to plan storage requirements.
Google Cloud Storage is scalable, but there are limitations.
The storage is very scalable, so you can effortlessly scale it.
The downloading of high volume data and scalability processes face performance issues related to high data volumes.
 

Stability Issues

Sentiment score
7.7
Amazon S3 is highly stable and reliable with excellent performance, minimal maintenance, and slight security and upload speed concerns.
Sentiment score
6.6
Google Cloud Storage is reliable and efficient, with high stability and performance ratings, maintaining data integrity globally.
Sentiment score
7.1
Microsoft Azure Object Storage is highly stable, with minimal issues, quickly resolved outages, and largely positive user feedback.
There is zero latency or downtime.
Transitioning between S3 storage classes, like moving data from the standard class to Glacier or Glacier Deep Archive, has been challenging.
Amazon S3 is highly stable.
There was no direct experience with any instability during my involvement.
The downloading of high volume data and scalability processes face performance issues related to high data volumes.
 

Room For Improvement

Users want a more intuitive Amazon S3 interface, enhanced speed, security features, simplified pricing, and better service integration.
Google Cloud Storage needs speed, cost improvements, user-friendly management, and enhanced security, integration, capacity, pricing, and data tools.
Microsoft Azure Object Storage needs better performance, cost efficiency, simpler UI, improved support, integration, stability, and AI/ML features.
An improvement could be associating the naming with personal accounts, allowing more familiar or desired names without conflicting with global conventions.
The practice of protecting data could be more streamlined or mandatory.
I would like to see an increase in the data upload limit, similar to DynamoDB, where there is no data limit.
They cover a broad range of products, which might affect their ability to compete well in certain niches.
When using Data Lakes for analytics and frequently pulling data from our source database to Microsoft Azure Blob Storage, there should be faster methods to download large data from Microsoft Azure Storage Blob to different locations.
The improvement needed for Microsoft Azure Object Storage is to reduce the transactional charges, as these read and write operation charges are higher.
 

Setup Cost

Amazon S3's pay-as-you-go model offers cost-effectiveness, though advanced features may increase expenses compared to competitors.
Enterprise buyers find Google Cloud Storage pricing competitive, citing flexibility and moderate fees, despite occasional cost increases.
Microsoft Azure Object Storage offers flexible pay-as-you-go pricing but can be costly with additional charges and complex pricing.
I've used the free tier and haven't been charged yet.
S3 offers multiple classes, allowing you to move data to cheaper classes for cost savings.
It is somewhat justified due to the benefits, but there is room for reconsideration.
Depending on your setup, Google Cloud Storage is economical, especially if you do not need high stability and scalability.
Google Cloud was cheaper compared to AWS and Azure.
It's a pay-per-use solution and a good idea for proof of concept and value.
The licensing cost of Microsoft Azure Object Storage is cheaper compared to other competitors, such as Google or third-party solutions, which easily engages customers.
 

Valuable Features

Amazon S3 is favored for its security, scalability, unlimited storage, and integration with AWS, ideal for diverse data needs.
Google Cloud Storage provides scalability, strong security, seamless integration, and flexible features, making it reliable and user-friendly.
Microsoft Azure Object Storage offers secure, scalable storage with flexible APIs, cost-effectiveness, and support for AI/ML initiatives.
Its stability and scalability are also impressive, as it allows for increased storage space according to demand.
I appreciate its capability to create static websites and integrate with services like CloudFront, EC2, and DynamoDB.
Security measures like encryption, access controls, and the block public access feature are also important.
We do not experience any disruptions, and the service meets our needs and requirements.
The user interface of Google Cloud Storage is easy and consistent across all their products.
Since I work mostly with AI/ML, data piping, data integrations, and ETL tools, these features are valuable.
When talking about storage accounts, customers utilize Azure file as a replica of the file server, allowing them to access file shares or storage accounts from their systems, making it easy to use while automatically syncing data with the cloud.
The ability to store everything inside Blob or Object storage and use it for archiving data is beneficial.
 

Mindshare comparison

As of August 2025, in the Public Cloud Storage Services category, the mindshare of Amazon S3 is 12.4%, up from 12.2% compared to the previous year. The mindshare of Google Cloud Storage is 8.9%, down from 11.4% compared to the previous year. The mindshare of Microsoft Azure Object Storage is 2.1%, up from 1.9% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Public Cloud Storage Services
 

Featured Reviews

Vagner Martins - PeerSpot reviewer
Enhanced data security with seamless integration and static website capabilities
S3 is a great service offering numerous possibilities. It allows for storing objects and files of various types. I appreciate its capability to create static websites and integrate with services like CloudFront, EC2, and DynamoDB. Despite being focused on security, I leverage features such as cryptography and integration with CloudTrail.
Manimaran Tannimalai - PeerSpot reviewer
User interface consistency facilitates seamless project planning and design for specialized tasks
While Google has made efforts to address SAP loads, the company lacks a product specialist focus. They cover a broad range of products, which might affect their ability to compete well in certain niches. Google's strength lies in their adapted approach to specific tasks, as seen with SAP loads. Generally, their focus is widespread.
Akram Zabat - PeerSpot reviewer
Provides versatile data storage solutions with a simple setup and easy to use
It's similar to S3 for AWS. The ability to store everything inside Blob or Object storage and use it for archiving data is beneficial. For example, you can transform data from relational databases, flatten it, and store it in Object storage to save space within the databases. If I want to save data and do not require legacy access, it's a good solution, for instance, to migrate archives from databases to Object storage. This can also be used for business intelligence purposes. Having a storage solution for data makes it the best place to store it. Azure has its own solution for StatsQ Web Apps.
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Top Industries

By visitors reading reviews
Computer Software Company
16%
Financial Services Firm
10%
Manufacturing Company
9%
University
8%
Computer Software Company
15%
Comms Service Provider
7%
Financial Services Firm
7%
Manufacturing Company
6%
Computer Software Company
22%
Manufacturing Company
17%
Insurance Company
7%
Retailer
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

Questions from the Community

What do you like most about Amazon S3?
We can easily connect to the AWS resources.
What is your experience regarding pricing and costs for Amazon S3?
AWS pricing for Amazon S3 starts at a higher cost, particularly in the standard class. However, with lifecycle manage...
What needs improvement with Amazon S3?
AWS ( /products/amazon-aws-reviews ) should provide more attractive and comprehensive documentation, especially while...
What is your experience regarding pricing and costs for Google Cloud Storage?
Google Cloud ( /products/google-cloud-reviews ) was cheaper compared to AWS ( /products/amazon-aws-reviews ) and Azur...
What needs improvement with Google Cloud Storage?
It took only five minutes to get everything working with Google Cloud Storage, so it was easy. For Google Cloud Stora...
What is your experience regarding pricing and costs for Microsoft Azure Object Storage?
The licensing cost of Microsoft Azure Object Storage is cheaper compared to other competitors, such as Google or thir...
What needs improvement with Microsoft Azure Object Storage?
The improvement needed for Microsoft Azure Object Storage is to reduce the transactional charges, as these read and w...
 

Also Known As

S3, Simple Storage Service
No data available
Microsoft Azure Blob Storage, Azure Object Storage, MS Azure Object Storage
 

Overview

 

Sample Customers

Netflix, Airbnb, Thomson Reuters, Zillow, Alert Logic
1. Adobe 2. Airbnb 3. Amazon 4. Apple 5. AT&T 6. Baidu 7. Cisco 8. Coca-Cola 9. Dell 10. eBay 11. Facebook 12. Ford 13. Google 13. HP 14. IBM 15. Intel 16. JPMorgan Chase 17. LinkedIn 18. Lyft 19. Microsoft 20. Netflix 21. Nike 22. Oracle 23. PayPal 24. Pinterest 25. Qualcomm 26. SAP 27. Spotify 28. Tesla 29. Toyota 30. Twitter 31. Visa 32. Walmart 33. WeWork
Umbraco, Xbox, Radioshack, 343 Industries, McKesson
Find out what your peers are saying about Amazon Web Services (AWS), Google, Microsoft and others in Public Cloud Storage Services. Updated: July 2025.
864,574 professionals have used our research since 2012.