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Sales Account Manager at a tech services company with 51-200 employees
Reseller
Jan 13, 2022
Simple implementation, effective email threat detection, and secure
Pros and Cons
  • "The solution is very easy to use. All you have to do is to assign the license to the end-user and it's done. The customer will only have the feature activated, and the solution will monitor the emails to determine if they are a threat or not."
  • "They can improve their security in a way where a customer can know if all their attachments are safe or not to open through a report. The solution does its job perfectly, but it never reports to the customer whether those attachments have been stopped before or not."

What is our primary use case?

Microsoft Defender for Office 365 was a product called Advanced Threat Protection(ATP) in the beginning and it was changed. Microsoft Defender for Office 365 is an email security. Our customers should know that it is only email security and not a full security feature solution. It is for checking the attachments of emails, and it will move them on if they are secure, and if they are not secure it will not move them forward.

What is most valuable?

The solution is very easy to use. All you have to do is to assign the license to the end-user and it's done. The customer will only have the feature activated, and the solution will monitor the emails to determine if they are a threat or not.

What needs improvement?

They can improve their security in a way where a customer can know if all their attachments are safe or not to open through a report. The solution does its job perfectly, but it never reports to the customer whether those attachments have been stopped before or not.

For how long have I used the solution?

I have been using Microsoft Defender for Office 365

Buyer's Guide
Microsoft Defender for Office 365
January 2026
Learn what your peers think about Microsoft Defender for Office 365. Get advice and tips from experienced pros sharing their opinions. Updated: January 2026.
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What do I think about the scalability of the solution?

Microsoft Defender for Office 365 has been scalable.

How was the initial setup?

The implementation is simple, once you have the license you assign it to the end-user.

What was our ROI?

We have seen a return on investment because if we would have received a phishing email, Microsoft Defender for Office 365 would help out to detect the threat instead of crashing down the whole company. The solution keeps emails protected with high security benefiting the company, whether it's an inbound or outbound email.

What's my experience with pricing, setup cost, and licensing?

Microsoft Defender for Office 365 is an add-on to the Office license. Many customers are purchasing this solution.

What other advice do I have?

I would advise every customer who requires email security to purchase Microsoft Defender for Office 365.

I rate Microsoft Defender for Office 365 a ten out of ten.

Disclosure: My company has a business relationship with this vendor other than being a customer.
PeerSpot user
reviewer1343688 - PeerSpot reviewer
Senior Network Analyst at a financial services firm with 1,001-5,000 employees
Real User
Aug 1, 2021
A stable, scalable, and resilient security solution
Pros and Cons
  • "At the moment we are satisfied with this product. It's a stable, scalable, and resilient solution for us."
  • "It would be better if it were more scalable. It depends on the architecture, but we would like to make it more scalable for both data centers."

What is our primary use case?

In general, we use it for OneDrive and Office tools.

What is most valuable?

At the moment we are satisfied with this product. It's a stable, scalable, and resilient solution for us.

What needs improvement?

It would be better if it were more scalable. It depends on the architecture, but we would like to make it more scalable for both data centers. 

For how long have I used the solution?

I have been working with Microsoft Defender for Office 365 for almost seven years.

What do I think about the stability of the solution?

Microsoft Defender for Office 365 is very stable.

What do I think about the scalability of the solution?

Microsoft Defender for Office 365 is very scalable. Because we have our issues on principle access, we can be scalable and resilient.

How are customer service and technical support?

Technical support is excellent and very helpful. 

What other advice do I have?

I would recommend the solution because it's very helpful as a scalable and resilient solution. It's useful for our users here every day.

On a scale from one to ten, I would give Microsoft Defender for Office 365 a nine.

Which deployment model are you using for this solution?

Public Cloud
Disclosure: My company has a business relationship with this vendor other than being a customer. Partner
PeerSpot user
Buyer's Guide
Microsoft Defender for Office 365
January 2026
Learn what your peers think about Microsoft Defender for Office 365. Get advice and tips from experienced pros sharing their opinions. Updated: January 2026.
881,082 professionals have used our research since 2012.
reviewer2315748 - PeerSpot reviewer
IT Specialist at a government with 51-200 employees
Real User
Dec 20, 2023
Stops evolving threats and offers peace of mind
Pros and Cons
  • "The product is not resource-intensive."
  • "We need to be able to whitelist data at the backend."

What is our primary use case?

We use the solution for wireless scanning, reporting, and monitoring. 

How has it helped my organization?

The product is not resource-intensive. 

What is most valuable?

The tool's most valuable feature is virus scanning, which has saved us from malware and ransomware. 

What needs improvement?

We need to be able to whitelist data at the backend. 

For how long have I used the solution?

I have been using the product for three years. 

What do I think about the stability of the solution?

Microsoft Defender for Office 365 is stable. 

What was our ROI?

We have seen ROI with the product's use. 

What's my experience with pricing, setup cost, and licensing?

The tool's pricing is reasonable. 

What other advice do I have?

Microsoft Defender for Office 365 can stop evolving threats, which provides peace of mind. 

The solution has helped us discontinue other security products. It has helped us save time and money. 

I rate the product a nine out of ten. 

Disclosure: My company does not have a business relationship with this vendor other than being a customer.
PeerSpot user
reviewer1272933 - PeerSpot reviewer
Cloud Services Director at a tech services company with 11-50 employees
Real User
Jul 31, 2023
Has an easy initial setup and is scalable
Pros and Cons
  • "The initial setup was easy."
  • "There is room for improvement in terms of reporting."

What needs improvement?

There is room for improvement in terms of reporting. There could be more features around it.

For how long have I used the solution?

I have been using this solution for a year. 

What do I think about the scalability of the solution?

There are around ten users in our organization. We are planning to extend our usage to 50 people.

Which solution did I use previously and why did I switch?

I worked with ESET. I switched to Defender because it was free with Office 365.

How was the initial setup?

The initial setup was easy. It took a few hours. 

What other advice do I have?

Overall, I would rate the solution an eight out of ten. The reporting features have room for improvement.

Which deployment model are you using for this solution?

Public Cloud

If public cloud, private cloud, or hybrid cloud, which cloud provider do you use?

Microsoft Azure
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
PeerSpot user
Buyer's Guide
Download our free Microsoft Defender for Office 365 Report and get advice and tips from experienced pros sharing their opinions.
Updated: January 2026
Buyer's Guide
Download our free Microsoft Defender for Office 365 Report and get advice and tips from experienced pros sharing their opinions.