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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
6.0
Organizations see strong ROI from Amazon S3 due to scalability, cost-effectiveness, and benefits like hardware decommissioning and storage classes.
Sentiment score
7.5
Organizations achieve 90% cost savings with Azure Block Storage, enhancing security and promising further cost reductions over three years.
Moving infrequently accessed data to cheaper classes like Glacier is beneficial for long-term storage at a lower cost.
 

Customer Service

Sentiment score
7.0
Amazon S3 customer service is mostly positive with quick, knowledgeable support, though some users experience delays and cost concerns.
Sentiment score
5.5
Customers find Microsoft Azure Block Storage support responsive but desire faster access to expert help and more consistent assistance.
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.
The response time for enterprise support needs improvement.
 

Scalability Issues

Sentiment score
8.4
Amazon S3 offers scalable, secure storage solutions for businesses of all sizes, despite some limitations in account configurations.
Sentiment score
7.5
Microsoft Azure Block Storage is highly scalable, easily accommodating diverse project sizes with seamless vertical and horizontal scaling support.
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.
The ability to scale is well-supported.
It is a significant advantage of the product.
We are on a premium plan, which should handle scalability automatically.
 

Stability Issues

Sentiment score
8.1
Amazon S3 offers reliable performance and stability, with minimal issues reported, ensuring a dependable experience for users.
Sentiment score
7.6
Microsoft Azure Block Storage is highly stable and reliable, though some large users experience broader service instability and slow downloads.
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.
It isn't as stable as sound storage systems in a premise environment.
Overall, the stability is very good.
None of the other storage vendors have all these features so easily manageable and fast to set up as Block Storage.
 

Room For Improvement

Amazon S3 users seek improved UI, better performance, lower costs, easier setup, and enhanced compliance, security, and metadata features.
Microsoft Azure Block Storage encounters issues with cost, support, integration, UI complexity, stability, scalability, security, and performance.
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.
Its compatibility with various platforms could be enhanced to allow for a seamless operation across different cloud environments.
Some alternatives are cheaper and available for long trial periods before the payment.
Enabling SFTP on Microsoft Azure Block Storage didn’t allow us to get the IP address, as Azure doesn’t support it.
 

Setup Cost

Amazon S3 offers flexible pay-as-you-go pricing, though costs can rise with data retrieval and advanced features.
Microsoft Azure Block Storage is cost-effective with pay-as-you-go pricing, but extra costs for backup and data access occur.
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.
For medium-sized companies, especially when discussing cost and scalability, it can be quite expensive.
The cost for Azure Data Factory, utilized for intensive data migration, was high but expected, as it's a one-time activity.
It is reasonable, however, it can be cheaper.
 

Valuable Features

Amazon S3 offers high availability, security, scalability, ease of use, integration, and efficient data management with AWS compatibility.
Microsoft Azure Block Storage is praised for its security, scalability, cost-effectiveness, and seamless integration with strong management and deployment features.
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.
The tool allows me to download to my device, control access, and manage data with ease.
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.
I can store data, use the storage account as a queue, and the pricing is also quite economical.
 

Categories and Ranking

Amazon S3
Ranking in Public Cloud Storage Services
2nd
Average Rating
8.8
Reviews Sentiment
7.2
Number of Reviews
82
Ranking in other categories
No ranking in other categories
Microsoft Azure Block Storage
Ranking in Public Cloud Storage Services
11th
Average Rating
8.0
Reviews Sentiment
6.7
Number of Reviews
64
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of May 2025, in the Public Cloud Storage Services category, the mindshare of Amazon S3 is 11.5%, down from 13.9% compared to the previous year. The mindshare of Microsoft Azure Block Storage is 0.8%, down from 1.3% 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.
MatsHagberg Olsson2 - PeerSpot reviewer
Empowers secure data management with affordable tools and minimal hassle
The most valuable feature is that it's very affordable in comparison to competitors. The absolute best feature is the Azure Storage Explorer tool. The tool allows me to download to my device, control access, and manage data with ease. Additionally, the joint use of Azure portal further facilitates management depending on my location.
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Top Industries

By visitors reading reviews
Educational Organization
74%
Computer Software Company
5%
Financial Services Firm
4%
Manufacturing Company
2%
Computer Software Company
18%
Financial Services Firm
16%
Manufacturing Company
14%
Comms Service Provider
8%
 

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?
S3 is a pay-as-you-go service. I pay based on the data volume I am using.
What needs improvement with Amazon S3?
There is a limitation with the data upload size, such as the five terabytes restriction. I would like to see an increase in the data upload limit, similar to DynamoDB, where there is no data limit.
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?
Pricing could be rated as eight out of ten. It is reasonable, however, it can be cheaper.
What needs improvement with Microsoft Azure Block Storage?
At the moment, I do not have anything specific in mind for improvements. The most important thing for me is accessibility and easy provisioning to multiple servers with different vendors.
 

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: April 2025.
850,028 professionals have used our research since 2012.