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Amazon S3 vs Microsoft Azure Block Storage comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Oct 1, 2024

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
2.6
Microsoft Azure Block Storage optimizes expenses with 90% cost reduction, ease of management, and ensures data protection against issues.
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
 

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
5.5
Microsoft Azure Block Storage support varies; premium plans offer faster responses, while others face delays and inconsistent service.
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
Support quality is good, but the main issue is the delay in handling tickets.
Cloud Engineer at a financial services firm with 11-50 employees
I had contacted them before and they replied rapidly.
System vice president at a non-tech company with 51-200 employees
Ours is a government enterprise organization, so we have a premium support agreement with Microsoft, and they give us the best support.
Solution Architect at a computer software 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
5.8
Microsoft Azure Block Storage is scalable, user-friendly, and suitable for all businesses, though scaling can increase costs.
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 ability to scale is well-supported.
Sr. Cloud Engineer at a tech services company with 1,001-5,000 employees
It is a significant advantage of the product.
Senior Consultant at a tech company with 501-1,000 employees
We are on a premium plan, which should handle scalability automatically.
Delivery Manager at a computer software company with 501-1,000 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
7.6
Microsoft Azure Block Storage is highly rated for stability, despite occasional regional downtime and minor improvement suggestions.
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
It isn't as stable as sound storage systems in a premise environment.
Information Technology Business Partner and Enterprise Architecture Lead at a construction company with 10,001+ employees
Overall, the stability is very good.
Sr. Cloud Engineer at a tech services company with 1,001-5,000 employees
None of the other storage vendors have all these features so easily manageable and fast to set up as Block Storage.
Senior Solutions Architect at EQ2 Technology
 

Room For Improvement

Amazon S3 users face challenges with file management, speed, costs, security, setup, and request improved dashboard and technical support.
Microsoft Azure Block Storage users face pricing, interface, and integration challenges, with additional needs for better security and scalability.
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
Its compatibility with various platforms could be enhanced to allow for a seamless operation across different cloud environments.
Information Technology Business Partner and Enterprise Architecture Lead at a construction company with 10,001+ employees
Some alternatives are cheaper and available for long trial periods before the payment.
Lead DevOps and Release Engineer-L2 at ITWORX
Enabling SFTP on Microsoft Azure Block Storage didn’t allow us to get the IP address, as Azure doesn’t support it.
Delivery Manager at a computer software company with 501-1,000 employees
 

Setup Cost

Amazon S3 offers competitive pay-as-you-go pricing, but retrieval and transfer across regions may increase costs.
Microsoft Azure Block Storage pricing is generally higher than competitors, but offers discounted rates through enterprise agreements.
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
For medium-sized companies, especially when discussing cost and scalability, it can be quite expensive.
Information Technology Business Partner and Enterprise Architecture Lead at a construction company with 10,001+ employees
The cost for Azure Data Factory, utilized for intensive data migration, was high but expected, as it's a one-time activity.
Delivery Manager at a computer software company with 501-1,000 employees
It is reasonable, however, it can be cheaper.
Senior Consultant at a tech company with 501-1,000 employees
 

Valuable Features

Amazon S3 delivers scalable, secure storage with global access, robust data management, and cost-effective integration, enhancing operational efficiency.
Microsoft Azure Block Storage is reliable, scalable, secure, and affordable, with excellent data management and integration features.
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
The tool allows me to download to my device, control access, and manage data with ease.
Senior Solutions Architect at EQ2 Technology
The world is now directed toward a centralized data platform or Fabric to build a data lake house for data engineering, which keeps all data in a centralized place that's beneficial for the governance layer and unified governance.
System vice president at a non-tech company with 51-200 employees
The ability to increase and scale out is really easy, allowing us to manage a large amount of data with reduced dependency on scalability issues.
Information Technology Business Partner and Enterprise Architecture Lead at a construction company with 10,001+ employees
 

Categories and Ranking

Amazon S3
Ranking in Public Cloud Storage Services
2nd
Average Rating
8.8
Reviews Sentiment
6.9
Number of Reviews
85
Ranking in other categories
No ranking in other categories
Microsoft Azure Block Storage
Ranking in Public Cloud Storage Services
10th
Average Rating
8.0
Reviews Sentiment
5.9
Number of Reviews
67
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of March 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 Block Storage is 2.2%, up from 0.8% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Public Cloud Storage Services Mindshare Distribution
ProductMindshare (%)
Amazon S313.8%
Microsoft Azure Block Storage2.2%
Other84.0%
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.
Ajai Jayakumar - PeerSpot reviewer
Solution Architect at a computer software company with 501-1,000 employees
Has supported secure file sharing and data automation with minimal setup effort
The encryption feature in Microsoft Azure Block Storage is very good, and the security is excellent. It is easy to map the storage to the virtual servers and user desktops, which is also very beneficial. I can perform automations on the data, such as moving hot data and cold data, and I can select storage based on performance. The security provided by Microsoft around Microsoft Azure Block Storage is a very good function. The replication feature in Microsoft Azure Block Storage is a very good function. The analytic capabilities of Microsoft Azure Block Storage can help optimize resources. I usually work with a third-party tool; our data analytics team uses some custom-made tools for analytics data and dashboards, so we do not use the Microsoft dashboard; we are using a third-party dashboard. It is very easy to manage Microsoft Azure Block Storage. If you have good knowledge of it, it is very easy to manage. Microsoft Azure Block Storage service is a very good, 100% reliable service. It is highly scalable, and performance-wise and reliability-wise, it does not go down. It provides 99.9% uptime without downtime, so it is a very good feature. The backup and restoration efficiency of Microsoft Azure Block Storage is good.
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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
16%
Construction Company
13%
Manufacturing Company
8%
Performing Arts
8%
 

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 Business26
Midsize Enterprise14
Large Enterprise24
 

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 improved to 99.9% which minimizes downtime, ETL processing time decreased by appr...
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 do you like most about Microsoft Azure Block Storage?
We use the solution to develop SaaS platforms on Azure. We utilize various Microsoft components like block storage and databases for this purpose.
What is your experience regarding pricing and costs for Microsoft Azure Block Storage?
Our experience with pricing has been positive. The budget for Microsoft Azure services has been within expectations for the last couple of months. The cost for Azure Data Factory ( /products/azure-...
What needs improvement with Microsoft Azure Block Storage?
For improvement in Microsoft Azure Block Storage, they can provide tiered level storages, maybe low-cost storages for storing archive data, but it is already there. I do not think there is much to ...
 

Also Known As

S3, Simple Storage Service
MS Azure Block Storage
 

Overview

 

Sample Customers

Netflix, Airbnb, Thomson Reuters, Zillow, Alert Logic
Mazda, BlinkBox, Rakuten Showtime, Xbox One, Serko, ChronoDrive
Find out what your peers are saying about Amazon S3 vs. Microsoft Azure Block Storage and other solutions. Updated: March 2026.
885,311 professionals have used our research since 2012.