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Azure Key Vault vs Microsoft Defender for Office 365 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
7.1
Azure Key Vault delivers ROI through cost-efficiency, enhanced security, compliance, and centralized management, improving organizational security and access control.
Sentiment score
6.9
Microsoft Defender for Office 365 offers strong ROI through security enhancements, cost savings, and improved company productivity despite measurement challenges.
It has also decreased our time to detection and response by about 15 to 20 percent.
Technology support manager at Alfred State College
Overall, cost of owning and operating our system goes down.
Designation Chief Consultant at Avtow
It's hard to quantify the return on investment we've seen from Microsoft Defender for Office 365.
Chief Architect at a tech vendor with 1,001-5,000 employees
 

Customer Service

Sentiment score
6.9
Azure Key Vault support is praised for responsiveness and knowledge, though some experience communication issues and delays reaching experts.
Sentiment score
5.8
Microsoft Defender for Office 365 users rate support highly, praising its responsiveness and 24/7 availability, despite occasional documentation and communication issues.
Technical support from Azure responds as quickly as possible without any delay.
Security Engineer at a computer software company with 1,001-5,000 employees
I have a strong relationship with Microsoft since we are one of their best clients in Spain.
Software Architect at RedesCDM
The skill level of the support staff is also questionable.
IT Director at Infosys
Over the past two years, there have been no critical problems.
Solution Consultant at BIM Group of Companies
we opened tickets, and they typically resolve them quickly.
Chief Architect at a tech vendor with 1,001-5,000 employees
With a subscription for Microsoft Defender for Office 365, it is an eight. Without it, it is a six.
Manager at a tech services company with 10,001+ employees
 

Scalability Issues

Sentiment score
7.2
Azure Key Vault is scalable, cloud-based, suitable for enterprises, but requires improved integration; users rate scalability highly.
Sentiment score
7.8
Microsoft Defender for Office 365 offers scalable, efficient protection for large enterprises, ensuring seamless growth across diverse industries.
We have never faced scalability problems, and Microsoft manages it effectively.
Solution Consultant at BIM Group of Companies
Microsoft Defender for Office 365 scales transparently for us, as we grew from 1,000 users to 3,000 users, and we didn't notice much difference.
Chief Architect at a tech vendor with 1,001-5,000 employees
Microsoft Defender for Office 365 scales with the growing needs of my company well.
Senior Client Director and Advisory Service Leader at Crossfuze
 

Stability Issues

Sentiment score
8.1
Azure Key Vault is highly reliable, rated 8-10, with minor performance issues as usage increases, outperforming competitors in stability.
Sentiment score
7.7
Microsoft Defender for Office 365 provides 99.9% uptime with minor issues, ensuring reliable performance and seamless cloud integration.
I would rate the stability of Microsoft Defender for Office 365 as 10 over 10 because it's highly available, it works, and it does the job it is meant to do.
Cloud Solutions Architect at a tech services company with 201-500 employees
I have not experienced any downtime, crashes, or performance issues because of Defender.
Technology Associate at a financial services firm with 51-200 employees
The solution is stable, as we have been using it for the past two years.
Solution Consultant at BIM Group of Companies
 

Room For Improvement

Azure Key Vault needs an intuitive interface, improved integration, enhanced security, optimized pricing, and better support and accessibility.
Users call for enhanced virus detection, cross-platform support, and pricing transparency in Microsoft Defender for Office 365.
My security area wants to rotate passwords every day, every week, or every month, depending on the services.
Software Architect at RedesCDM
One of our certificates was not getting deployed, and during that time, the support team was unsure and had to connect with the back-end team for assistance.
Senior Infrastructure Engineer at MIC Global
The skill level of the support staff is also questionable.
IT Director at Infosys
The main area for improvement is simplifying the implementation and rollout process.
Infrastructure and Security Lead at Vedanta
Microsoft could improve by offering recommendations for domain spoofing attacks, especially scenarios where DNS records like SPF, DKIM, and DMARC are not properly published.
Solution Consultant at BIM Group of Companies
There is a different console for different things; I just want one consolidated console.
Senior Director, Security Architecture & Engineering at a leisure / travel company with 10,001+ employees
 

Setup Cost

Azure Key Vault pricing varies by usage, seen as cost-effective versus competitors, though some find it expensive.
Microsoft Defender for Office 365 pricing is seen as flexible but potentially expensive, offering value in comprehensive security features.
I would classify it as low priced.
Enterprise Architect at a computer software company with 1,001-5,000 employees
The pricing of Azure Key Vault is nominal, not that expensive.
Associate Vice President (Data Security & Protection - Confidential AI) at Standard Chartered Bank
We are planning to buy protection for Entra.
IT Director at Infosys
We've likely saved 30% of costs.
Designation Chief Consultant at Avtow
Money-wise, it is a part of the Office 365 suite, making it slightly more expensive compared to Trend Micro.
Infrastructure and Security Lead at Vedanta
Microsoft is quite affordable with a lot of features available for any size organization.
Solution Consultant at BIM Group of Companies
 

Valuable Features

Azure Key Vault offers secure, scalable secret management with easy integration, featuring advanced protection, role-based access, and DevOps support.
Microsoft Defender for Office 365 enhances email security with anti-phishing, anti-malware, threat intelligence, and seamless integration for efficient management.
All secrets are in the Key Vault, and access is managed by the integrated management in ITT, which Azure provides to the services.
Software Architect at RedesCDM
It also helps me increase my security posture and assists with regulatory and compliance requirements.
Enterprise Architect at a computer software company with 1,001-5,000 employees
Since implementing Azure Key Vault, I have observed that instead of storing plain values, we can store them securely as and when required.
Software Engineer at Synoptek
It ranks the threats and allows us to prioritize those hitting us the hardest, such as email threats.
Technology support manager at Alfred State College
It provides end-to-end visibility on email threats such as phishing, extending beyond Exchange Online Protection.
Solution Consultant at BIM Group of Companies
The value of the DLP feature is significant to us because we have internal data, sometimes sensitive, and the users may not always be aware of security and privacy, which might lead them to send out information mistakenly to external parties.
Chief Architect at a tech vendor with 1,001-5,000 employees
 

Categories and Ranking

Azure Key Vault
Ranking in Microsoft Security Suite
15th
Average Rating
8.6
Reviews Sentiment
7.1
Number of Reviews
52
Ranking in other categories
Enterprise Password Managers (1st), Certificate Management Software (1st), Secrets Management Tools (2nd)
Microsoft Defender for Offi...
Ranking in Microsoft Security Suite
10th
Average Rating
8.4
Reviews Sentiment
6.8
Number of Reviews
60
Ranking in other categories
Email Archiving (1st), Email Security (1st), Advanced Threat Protection (ATP) (2nd), Secure Email Gateway (SEG) (1st)
 

Mindshare comparison

As of January 2026, in the Microsoft Security Suite category, the mindshare of Azure Key Vault is 1.5%, up from 1.1% compared to the previous year. The mindshare of Microsoft Defender for Office 365 is 3.6%, up from 2.4% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Microsoft Security Suite Market Share Distribution
ProductMarket Share (%)
Microsoft Defender for Office 3653.6%
Azure Key Vault1.5%
Other94.9%
Microsoft Security Suite
 

Featured Reviews

Rajthilak BS - PeerSpot reviewer
Associate Vice President (Data Security & Protection - Confidential AI) at Standard Chartered Bank
Have addressed compliance challenges but still struggle with seamless integration of certificate issuance between environments
In terms of Azure Key Vault improvements, we have to compare the competitor. If we consider AWS, our bank has Microsoft PKI, which is a Microsoft product, for the entire digital certificate infrastructure. Even in the cloud, when it is AWS, the internal certificates are MS PKI. When we had a problem, users had to come to on-premise to get a certificate and import it to AWS Certificate Manager and assign it. We wondered why we could not issue the certificate directly from the cloud for cloud users. There was a simple way in AWS. They have a Private Certificate Authority (PCA) and Amazon Certificate Manager. Private Certificate Authority issues certificates to Amazon services. They also provide Amazon Certificate Manager to store and deploy certificates. These are two neat components - one is an issuer and another is storage and deployment solutions for certificates. With PCA, I can directly enable it and get certificates from AWS itself. AWS can issue SSL/TLS certificates if you enable it directly. If you consider Azure, it is not very clear. Even the naming convention, Key Vault, might not suggest that this is a PKI or certificate manager. You cannot issue certificates directly. They have app certificates and did not have a clear-cut certificate management solution in the cloud when I worked at that time. I am not sure whether they have updated Azure Key Vault as a full-fledged PKI solution now. From what I saw, it was not a full-fledged PKI solution. We are not majorly using Azure Key Vault because it is only for storing secrets. If some solutions can provide guidance on how we can maximize leverage, we can immediately look forward to doing that. We already have some business problems we want to solve. While our primary focus is AWS, many of the services such as ADO are running on Azure, and the secondary services are growing bigger.
Emeka Ndulu - PeerSpot reviewer
Cloud Solutions Architect at a tech services company with 201-500 employees
Improves threat visibility and response while reducing manual tasks and training users against phishing
I appreciate the attack simulation feature whereby I get to train users and educate them on how to identify phishing emails and spam emails, as well as the anti-spam protection. It gives me visibility into my threat environment and threat landscape to ensure that I am one step ahead of any likelihood of threats within my environment. I get to detect it and respond, so the threat intelligence is very effective. Microsoft security solutions save my time. It saves money because once I protect my environment, I don't lose money. It has decreased my detection time and my time to respond.
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Top Industries

By visitors reading reviews
Financial Services Firm
13%
Computer Software Company
12%
Manufacturing Company
10%
Government
7%
Computer Software Company
14%
Financial Services Firm
8%
Manufacturing Company
8%
Comms Service Provider
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business15
Midsize Enterprise11
Large Enterprise27
By reviewers
Company SizeCount
Small Business23
Midsize Enterprise10
Large Enterprise31
 

Questions from the Community

Which is better - Azure Key Vault or AWS Secrets Manager?
Azure Key Vault is a SaaS solution. You can easily store passwords and secrets securely and encrypt them. Azure Key Vault is a great solution to ensure you are compliant with security and governanc...
What do you like most about Microsoft Azure Key Vault?
With Azure Key Vault, we can generate our own keys and then import them inside the system, which provides a higher level of security than provider-managed keys.
What needs improvement with Microsoft Defender for Office 365?
The inbuilt analysis of false positives can be faster. It's not slow, but it can be faster.
What is your primary use case for Microsoft Defender for Office 365?
My use case for Microsoft Defender for Office 365 is for email protection, safe links, protection of links, documents, protecting my documents, and protecting attachments. I also use it to conduct ...
 

Also Known As

Microsoft Azure Key Vault, MS Azure Key Vault
MS Defender for Office 365
 

Overview

 

Sample Customers

Adobe, DriveTime, Johnson Controls, HP, InterContinental Hotels Group, ASOS
Microsoft Defender for Office 365 is trusted by companies such as Ithaca College.
Find out what your peers are saying about Azure Key Vault vs. Microsoft Defender for Office 365 and other solutions. Updated: December 2025.
881,082 professionals have used our research since 2012.