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Pros & Cons summary

Buyer's Guide

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Prominent pros & cons

PROS

Office 365 eliminates server and hardware costs and provides immediate feature updates.
Integration with OneDrive offers cloud access without the need for data backups.
Users enjoy unified communication through its VoIP offerings and outstanding technical support.
The automation capabilities, like Power Apps, improve workflow efficiency significantly.
Excel enhances accuracy and productivity, especially for sales tasks.

CONS

Several users report connectivity issues with Office 365, particularly when the internet connection is slow, leading to performance challenges.
Security and compatibility with non-Microsoft products require improvements, including B2B collaboration and advanced security features such as SAN protection.
The initial setup, as well as integration with platforms like Google Calendar and mobile services, is noted as complicated and in need of refinement.
Microsoft Teams and other Office 365 applications show limited functionality in terms of collaboration, specifically when including non-company members or dealing with file-sharing limitations across platforms.
Support for Office 365 is criticized for being slow and ineffective, with users feeling frustrated by the need to restart systems to resolve troubleshooting issues.
 

Office 365 Pros review quotes

LB
Jul 8, 2021
There are all sorts of really good tools for use on the information security side that allow us to make sure that our people are doing business and doing business right.
Minos Pitsillides - PeerSpot reviewer
Mar 31, 2022
As an email provider, I believe Office 365 is the best email provider.
Girish Vijay - PeerSpot reviewer
Aug 8, 2020
Quarantine email alerts to users to allow the email to their inbox (tricky but handy) - tricky if one doesn't have third-party email security, handy if one has got good third party email security).
Learn what your peers think about Office 365. Get advice and tips from experienced pros sharing their opinions. Updated: August 2025.
867,445 professionals have used our research since 2012.
reviewer1226838 - PeerSpot reviewer
Jul 26, 2020
It's nice that it's an all-in-one solution and everything is all in one place.
it_user646602 - PeerSpot reviewer
Jul 27, 2020
The products are quite simple for the end-users to use, the up-time is very good, the product is practically maintenance-free, and the multi-layer security is excellent from the security standpoint.
NF
Apr 10, 2022
The way the ERP presents information for the user is very good.
reviewer1389846 - PeerSpot reviewer
Jul 23, 2020
Reliable without any glitches.
MG
Jul 22, 2020
The integration with other applications is pretty good.
EB
Sep 2, 2025
Office 365 has positively impacted my organization by making the salespeople more accurate because they've been able to use the features in Excel instead of relying on the calculator or adding machine, and some of the AI with writing and things with Word has helped improve things with that, too.
Jul 29, 2019
The most valuable feature is the integration with OneDrive, which has allowed us, a small business, easy access to a cloud environment, with no need to back up the data from five different computers.
 

Office 365 Cons review quotes

LB
Jul 8, 2021
It seems like every other week when we log into the administrative portals, it doesn't matter which one, it could be the active directory portal, it could be the exchange admin center or SharePoint admin center, it seems like Microsoft is consistently updating with new versions of the admin centers, which can be frustrating.
Minos Pitsillides - PeerSpot reviewer
Mar 31, 2022
It would be a fantastic opportunity if their solution could be used in combination with VoIP software, allowing you to combine VoIP software and Office 365 on a single platform.
Girish Vijay - PeerSpot reviewer
Aug 8, 2020
Data protection and email security are almost the same for all the organizations, irrespective of their segment (SMB or enterprises), with standard subscription at least basic Data loss prevention and Advance threat protection can be enabled for SMB segments, it is available in enterprise version / Premium versions.
Learn what your peers think about Office 365. Get advice and tips from experienced pros sharing their opinions. Updated: August 2025.
867,445 professionals have used our research since 2012.
reviewer1226838 - PeerSpot reviewer
Jul 26, 2020
The one big problem with the solution is if you are presenting in Teams and someone puts their hand up, you don't get a notification. If you are running a meeting and just presenting you don't know that people have their hands up and want to ask a question.
it_user646602 - PeerSpot reviewer
Jul 27, 2020
The online applications have limited functionality compared to the local applications.
NF
Apr 10, 2022
Normally, they have a way to work with specific developments, and I think they shouldn't allow the partners to make some changes they have made. When I have a client with a lot of changes, we have a problem with that because there aren't rules to develop inside the ERP, so you can do anything.
reviewer1389846 - PeerSpot reviewer
Jul 23, 2020
Could include integration with other single sign-on solutions.
MG
Jul 22, 2020
If two people update the same file, it causes issues.
EB
Sep 2, 2025
One of the big changes is when Microsoft updates anything, they will switch where some of the settings are and where to find them, which becomes a little frustrating because you're used to it in one spot and it's someplace else.
Jul 29, 2019
Integration between Outlook calendar and Google Calendar would be a good improvement since many of our team use Android phones and personal Gmail accounts as their main calendar application.