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Amazon S3 vs Microsoft Azure Object Storage vs Oracle Cloud 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
4.8
Amazon S3 offers cost-effective data storage, scalability, and business benefits, despite challenges in quantifying ROI.
Sentiment score
5.1
Microsoft Azure Object Storage offers scalable, cost-effective solutions, enhancing business ROI and efficiency through flexible payment models.
Sentiment score
4.2
Oracle Cloud Object Storage is cost-effective for backups, encryption, and access control, achieving a 30% ROI and high user ratings.
Moving infrequently accessed data to cheaper classes like Glacier is beneficial for long-term storage at a lower cost.
Information Security Analyst at a financial services firm with 201-500 employees
I have seen a return on investment, and the ROI that we observed in our organization includes reducing manpower by 20% and achieving zero downtime for storage expansion, which improves overall productivity.
Data Engineer at a tech vendor with 10,001+ employees
Amazon S3 has a reasonable price as you pay a flat price to use it.
Senior Data & AI Engineer at Imprint
I have seen a return on investment as it saves both time and money with this agile technology.
Chief Technical Officer at a tech services company with 11-50 employees
 

Customer Service

Sentiment score
6.8
Amazon S3 support is knowledgeable and proactive, often resolving issues effectively, despite occasional slow response times and minor complaints.
Sentiment score
6.2
Microsoft Azure Object Storage support is effective but varies in responsiveness, with premium plans and regions affecting user satisfaction.
Sentiment score
4.2
Oracle Cloud Object Storage support is friendly and capable, but experiences mixed reviews due to delays and expertise issues.
I rate the technical support from Amazon for S3 a ten out of ten.
CTO at Atulya Abhinav Tech Private Limited
The customer support for Amazon S3 is very good; they are responsive and knowledgeable, providing quick resolutions, clear documentation, and proactive guidance during migrations or performance tuning.
Data Engineer at a tech vendor with 10,001+ employees
An engineer is assigned based on the severity of the issue.
DevOps Engineer at Olla Systems Limited
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.
Consultant - Architecture Solution at Onepoint
The customer support for Microsoft Azure Object Storage is not good.
Chief Technical Officer at a tech services company with 11-50 employees
Technical support from Microsoft is good.
Enterprise Architect at ATOS
When issues arise, it takes them at least three to four hours to respond.
Sr Quality Engineer at Accenture
I have a premium subscription for Oracle Cloud, which ensures a high level of support.
Cloud Specialist at a legal firm with 11-50 employees
Oracle is more cost-effective than competitors.
Oracle Technology Artchitect and Specialist at a tech services company with 501-1,000 employees
 

Scalability Issues

Sentiment score
7.8
Amazon S3 is highly regarded for its scalability, effortlessly handling expanding storage needs and supporting diverse applications efficiently.
Sentiment score
6.7
Microsoft Azure Object Storage is praised for robust scalability, handling extensive data needs, though some report performance issues.
Sentiment score
7.7
Oracle Cloud Object Storage is praised for its efficient scalability, ease of management, flexibility, and straightforward access management.
Data placed in an S3 bucket is replicated across availability zones in a region, ensuring scalability and availability.
Information Security Analyst at a financial services firm with 201-500 employees
The level of scalability allows storage to automatically scale on demand, without the need for manual intervention.
AWS Consultant at Virtual University
The scalability of Amazon S3 is excellent as it handles unlimited data and seamlessly supports growth without manual provisioning or performance degradation.
Data Engineer at a tech vendor with 10,001+ employees
The storage is very scalable, so you can effortlessly scale it.
Consultant - Architecture Solution at Onepoint
The downloading of high volume data and scalability processes face performance issues related to high data volumes.
Senior Solutions Architect at Think Power Solutions
Most of the time, it fits the requirement, but for drastic demands, we may need to provide quotas and other requirements to Microsoft for them to manage forecast and capacity planning.
Enterprise Architect at ATOS
The scalability of Oracle Cloud Object Storage deserves a perfect ten as it can be scaled easily.
DBA Competency Manager at 4iApps
We can adjust the number of CPUs as per our need and reduce the load.
IT Manager at a manufacturing company with 1,001-5,000 employees
 

Stability Issues

Sentiment score
7.8
Users find Amazon S3 reliable and stable, praising its performance and availability despite minor latency and upload speed issues.
Sentiment score
7.0
Microsoft Azure Object Storage is generally stable, but reliability can vary based on implementation partners and compliance standards.
Sentiment score
7.5
Oracle Cloud Object Storage is highly dependable with minimal issues, rated 8/10 for stability, especially in dual-region setups.
There is zero latency or downtime.
AWS Consultant at Virtual University
Transitioning between S3 storage classes, like moving data from the standard class to Glacier or Glacier Deep Archive, has been challenging.
Information Security Analyst at a financial services firm with 201-500 employees
Amazon S3 is highly stable.
DevOps Engineer at Olla Systems Limited
The downloading of high volume data and scalability processes face performance issues related to high data volumes.
Senior Solutions Architect at Think Power Solutions
From a security standpoint, there is a question mark due to past cyber attacks.
Enterprise Architect at ATOS
The system is stable, especially when set up in a single region.
Cloud Specialist at a legal firm with 11-50 employees
 

Room For Improvement

Amazon S3 users face challenges with file management, speed, costs, security, setup, and request improved dashboard and technical support.
Microsoft Azure Object Storage needs improvements in performance, cost, UI, integration, and security to meet user expectations.
Oracle Cloud Object Storage needs security enhancements, easier usability, improved integration, better customization, and efficient billing management.
An improvement could be associating the naming with personal accounts, allowing more familiar or desired names without conflicting with global conventions.
DevOps Engineer at Stellar Tech
The practice of protecting data could be more streamlined or mandatory.
Information Security Analyst at a financial services firm with 201-500 employees
I would like to see an increase in the data upload limit, similar to DynamoDB, where there is no data limit.
AWS Consultant at Virtual University
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.
Senior Solutions Architect at Think Power Solutions
They need enhancement in security aspects. Security alerts and integrations could be improved as part of lifecycle management, especially for archives and restoration requirements.
Enterprise Architect at ATOS
The improvement needed for Microsoft Azure Object Storage is to reduce the transactional charges, as these read and write operation charges are higher.
senior partner at Niyocon
The product can be difficult to use compared to how it is marketed.
Sr Quality Engineer at Accenture
I would like to know about integration with other Oracle Cloud services and whether it is easy to integrate Oracle Cloud Object Storage with other Oracle Cloud solutions.
Oracle Technology Artchitect and Specialist at a tech services company with 501-1,000 employees
The retrievability for Oracle Cloud Object Storage could be made simpler through the implementation of a GUI interface to retrieve data.
DBA Competency Manager at 4iApps
 

Setup Cost

Amazon S3 offers competitive pay-as-you-go pricing, but retrieval and transfer across regions may increase costs.
Microsoft Azure's flexible pricing appeals with pay-as-you-go and discounts, despite concerns over complexity and high usage costs.
Oracle Cloud Object Storage offers flexible pricing, appealing security features, though some find it costly for disaster recovery.
I've used the free tier and haven't been charged yet.
DevOps Engineer at Stellar Tech
S3 offers multiple classes, allowing you to move data to cheaper classes for cost savings.
Information Security Analyst at a financial services firm with 201-500 employees
Since using Amazon S3, storage costs have reduced by around 35% to 40% through lifecycle tiering.
Data Engineer at a tech vendor with 10,001+ employees
It's a pay-per-use solution and a good idea for proof of concept and value.
Consultant - Architecture Solution at Onepoint
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.
senior partner at Niyocon
Regarding pricing for Microsoft Azure Object Storage, I find it reasonable.
Sr. Manager IT Datacentre Cloud and Network at a insurance company with 1,001-5,000 employees
The pricing for Oracle Cloud Object Storage deserves a perfect ten as it is very inexpensive.
DBA Competency Manager at 4iApps
It is an expensive product.
Sr Quality Engineer at Accenture
The pricing for Oracle Cloud is comparable to other cloud providers.
Cloud Specialist at a legal firm with 11-50 employees
 

Valuable Features

Amazon S3 delivers scalable, secure storage with global access, robust data management, and cost-effective integration, enhancing operational efficiency.
Microsoft Azure Object Storage provides scalable, reliable, and secure data management with strong features for integration, backup, and compliance.
Oracle Cloud Object Storage offers scalable, secure, and cost-effective solutions with high performance and multi-region support for large datasets.
Its stability and scalability are also impressive, as it allows for increased storage space according to demand.
DevOps Engineer at Stellar Tech
I appreciate its capability to create static websites and integrate with services like CloudFront, EC2, and DynamoDB.
Information Security Analyst at a financial services firm with 201-500 employees
Security measures like encryption, access controls, and the block public access feature are also important.
AWS Consultant at Virtual University
Since I work mostly with AI/ML, data piping, data integrations, and ETL tools, these features are valuable.
Senior Solutions Architect at Think Power Solutions
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.
senior partner at Niyocon
The ability to store everything inside Blob or Object storage and use it for archiving data is beneficial.
Consultant - Architecture Solution at Onepoint
High availability, a large dataset, and stability are our main criteria for using this solution.
Sr Quality Engineer at Accenture
I find manageability, scalability, and security of the product most valuable.
IT Manager at a manufacturing company with 1,001-5,000 employees
It also provides multi-region support, enhancing data accessibility and safety.
Cloud Specialist at a legal firm with 11-50 employees
 

Mindshare comparison

As of April 2026, in the Public Cloud Storage Services category, the mindshare of Amazon S3 is 13.8%, up from 11.4% compared to the previous year. The mindshare of Microsoft Azure Object Storage is 3.3%, up from 2.0% compared to the previous year. The mindshare of Oracle Cloud Object Storage is 3.4%, down from 4.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Public Cloud Storage Services Mindshare Distribution
ProductMindshare (%)
Amazon S313.8%
Oracle Cloud Object Storage3.4%
Microsoft Azure Object Storage3.3%
Other79.5%
Public Cloud Storage Services
 

Featured Reviews

reviewer2774889 - PeerSpot reviewer
Data Engineer at a tech vendor with 10,001+ employees
Has reduced storage costs and improved data management through automated lifecycle and seamless service integration
The best features that Amazon S3 offers are high durability and availability with virtually unlimited storage, lifecycle management for automated tiering and cost control, versioning to retain and recover data changes, and integration with services such as Glue, Athena, EMR, Lambda, along with strong security via IAM roles, bucket policies, and encryption. These features help by ensuring data is always available, securely stored, and easily accessible for pipelines. Lifecycle policies reduce manual cleanup, versioning safeguards against accidental deletions, and integrations allow us to directly run analytics or trigger workflows without moving data around. Amazon S3 event notifications help automate tasks such as triggering ETL jobs or Lambda functions on new data arrivals, and features such as cross-region replication ensure data redundancy and compliance, while fine-grained access control makes it easy to manage permissions across teams securely. My organization has seen improvements in data accessibility, reduced infrastructure costs, and simplified data management through Amazon S3. We now have a unified scalable storage layer that supports analytics, backups, and migrations seamlessly, leading to faster workflows and better decision-making.
Animesh.Kumar - PeerSpot reviewer
Senior Solutions Architect at Think Power Solutions
Customer improves data management with enhanced storage and enjoys challenge of optimizing performance
Microsoft Azure Object Storage can be improved in terms of performance. 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. I did not receive much support in addressing this issue.
SureshKumar2 - PeerSpot reviewer
DBA Competency Manager at 4iApps
Experience significant cost savings through robust storage and seamless scalability
The usability of Oracle Cloud Object Storage could be enhanced, as retrieving data can be complicated unless one knows the correct method. For instance, when taking a backup for cloning purposes, there are specific steps that need to be followed, which many people are not aware of. This process could be simplified. The retrievability for Oracle Cloud Object Storage could be made simpler through the implementation of a GUI interface to retrieve data. This would make it more user-friendly. The setup for Oracle Cloud Object Storage could be more straightforward. Currently, we need to use standard formats for cURL scripts and other components.
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Top Industries

By visitors reading reviews
Manufacturing Company
10%
Marketing Services Firm
9%
University
8%
Computer Software Company
7%
Marketing Services Firm
18%
Construction Company
10%
Manufacturing Company
9%
Computer Software Company
9%
Manufacturing Company
17%
Computer Software Company
9%
Healthcare Company
8%
Retailer
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business33
Midsize Enterprise18
Large Enterprise39
By reviewers
Company SizeCount
Small Business23
Midsize Enterprise11
Large Enterprise21
By reviewers
Company SizeCount
Small Business3
Midsize Enterprise3
Large Enterprise6
 

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?
Since using Amazon S3, storage costs have reduced by around 35% to 40% through lifecycle tiering, data availability i...
What needs improvement with Amazon S3?
The only downside is the scalability limitations. I don't know if that is from AWS or my subscription.
What is your experience regarding pricing and costs for Microsoft Azure Object Storage?
My experience with pricing, setup cost, and licensing for Microsoft Azure Object Storage is very good.
What needs improvement with Microsoft Azure Object Storage?
The customer support for Microsoft Azure Object Storage is not good. If a good engineer is assigned, then it function...
What do you like most about Oracle Cloud Object Storage?
The solution's most valuable features are its speed, unlimited space, and simplicity of use.
What is your experience regarding pricing and costs for Oracle Cloud Object Storage?
The pricing for Oracle Cloud Object Storage deserves a perfect ten as it is very inexpensive.
What needs improvement with Oracle Cloud Object Storage?
I would like to improve the solution in terms of Data Integration and Data Flow, in addition to the user experience.
 

Also Known As

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

Overview

 

Sample Customers

Netflix, Airbnb, Thomson Reuters, Zillow, Alert Logic
Umbraco, Xbox, Radioshack, 343 Industries, McKesson
Brinks
Find out what your peers are saying about Amazon Web Services (AWS), Google, Nutanix and others in Public Cloud Storage Services. Updated: March 2026.
885,444 professionals have used our research since 2012.