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Pros & Cons summary

Buyer's Guide

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Prominent pros & cons

PROS

Amazon S3 is highly scalable and offers robust storage capabilities suitable for big data and various file formats.
Amazon S3 provides excellent security features, including encryption at rest and custom policy configurations.
Amazon S3 enables cost-effective storage solutions with its pay-as-you-use pricing model and low-cost storage classes.
Amazon S3 is reliable and stable, known for high availability and fault tolerance with features like data transfer acceleration.
Amazon S3 is well integrated with AWS services, facilitating easy connectivity and seamless data management.

CONS

Amazon S3 needs improvement in data upload speed and should allow for larger data upload sizes, similar to DynamoDB's lack of a data limit.
Pricing and complexities in licensing are noted issues for Amazon S3, as the cost is high and significant resources are required to understand and manage it fully.
Amazon S3's integration capabilities, particularly with other tools and AWS services, need enhancements to offer a more seamless experience.
Security features in Amazon S3 are considered insufficient, prompting calls for more comprehensive improvements and simplification.
Support response times from Amazon are slow and can be costly, requiring enhancement to be more efficient and financially accessible.
 

Amazon S3 Pros review quotes

reviewer2774889 - PeerSpot reviewer
Data Engineer at a tech vendor with 10,001+ employees
Nov 5, 2025
My organization has seen improvements in data accessibility, reduced infrastructure costs, and simplified data management through Amazon S3, resulting in a unified scalable storage layer that supports analytics, backups, and migrations seamlessly, leading to faster workflows and better decision-making.
Roberto Costa - PeerSpot reviewer
Senior Data & AI Engineer at Imprint
Sep 5, 2025
I have worked with many petabytes of data stored in Amazon S3, and I have never had any performance issues, stability issues, or anything similar.
reviewer2728158 - PeerSpot reviewer
Associate Cloud Operations Engineer at a tech vendor with 501-1,000 employees
Feb 16, 2026
Out of the features that I have used in Amazon S3, I liked the scalability and the disaster recovery planning the most.
Learn what your peers think about Amazon S3. Get advice and tips from experienced pros sharing their opinions. Updated: May 2026.
893,221 professionals have used our research since 2012.
Vagner Martins - PeerSpot reviewer
Information Security Analyst at a financial services firm with 201-500 employees
Nov 22, 2024
It allows for storing objects and files of various types.
Venkat-Raju - PeerSpot reviewer
Cloud Engineer at a retailer with 10,001+ employees
Apr 30, 2024
It's very well secured. We have S3 policies that allow you to write custom policies.
Syed Azhar - PeerSpot reviewer
Cloud engineer at a tech services company with 11-50 employees
Apr 25, 2025
Amazon S3 is highly stable.
Nawaz Ali Shah - PeerSpot reviewer
AWS Consultant at Virtual University
Feb 25, 2025
I find the cost-effective models particularly suitable for our needs.
Frank Ezuruike - PeerSpot reviewer
DevOps Engineer at Olla Systems Limited
Nov 22, 2024
Amazon S3 is easily scalable and provides fantastic performance, especially in comparison to other cloud solutions like OCI and Azure.
Joseph Adaji - PeerSpot reviewer
DevOps Engineer at Stellar Tech
Nov 22, 2024
One of the benefits is being a global service, so it can be accessed from anywhere.
BS
Aws Cloud Support at Operisoft Technologies
Nov 22, 2024
The most valuable feature of Amazon S3 for me is static deployment; it doesn't charge much, and I can integrate CloudFront for DNS and routing. It is very useful and affordable.
 

Amazon S3 Cons review quotes

reviewer2774889 - PeerSpot reviewer
Data Engineer at a tech vendor with 10,001+ employees
Nov 5, 2025
The main pain point that I have faced is the need for faster restore times from Glacier tiers, which could definitely be improved.
Roberto Costa - PeerSpot reviewer
Senior Data & AI Engineer at Imprint
Sep 5, 2025
One aspect I would mention is the naming in Amazon S3. If I create an S3 bucket with a specific name, such as 'Roberto bucket,' I cannot create it in another account with the same name.
reviewer2728158 - PeerSpot reviewer
Associate Cloud Operations Engineer at a tech vendor with 501-1,000 employees
Feb 16, 2026
The only downside is the scalability limitations.
Learn what your peers think about Amazon S3. Get advice and tips from experienced pros sharing their opinions. Updated: May 2026.
893,221 professionals have used our research since 2012.
Vagner Martins - PeerSpot reviewer
Information Security Analyst at a financial services firm with 201-500 employees
Nov 22, 2024
Enhancements in security features might be beneficial.
Venkat-Raju - PeerSpot reviewer
Cloud Engineer at a retailer with 10,001+ employees
Apr 30, 2024
One thing would be automatic replication between buckets, some feature like that.
Syed Azhar - PeerSpot reviewer
Cloud engineer at a tech services company with 11-50 employees
Apr 25, 2025
AWS should provide more attractive and comprehensive documentation, especially while integrating Amazon S3 with other AWS services like Elemental MediaConvert.
Nawaz Ali Shah - PeerSpot reviewer
AWS Consultant at Virtual University
Feb 25, 2025
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.
Frank Ezuruike - PeerSpot reviewer
DevOps Engineer at Olla Systems Limited
Nov 22, 2024
In terms of security, I struggled with setting permissions and access control initially.
Joseph Adaji - PeerSpot reviewer
DevOps Engineer at Stellar Tech
Nov 22, 2024
The naming conventions require unique global names, which can be cumbersome.
BS
Aws Cloud Support at Operisoft Technologies
Nov 22, 2024
The service could improve by offering mobile backups, which would be great since using Google Backup is costly.