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Office 365 Logo
5,548 views|4,728 comparisons
Slack Logo
2,528 views|1,854 comparisons
Top Review
Find out what your peers are saying about Office 365 vs. Slack and other solutions. Updated: March 2020.
535,544 professionals have used our research since 2012.
Quotes From Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:

Pros
"The integration with other applications is pretty good.""The solution is quite intuitive and easy to use.""My primary use case is for preparing presentations to teach, often on PowerPoint.""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.""It's nice that it's an all-in-one solution and everything is all in one place.""I love all of the applications being interlinked. I do not have to separately work on an independent system when it comes to file storage, email, and other tools.""I like all of the features.""Reliable without any glitches."

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"Slack is a powerpack bundle of features that help small or large organizations to handle teams and their tasks.""The most valuable feature is the screen sharing, which works well.""The most valuable features are video conferencing and sharing content during meetings.""Slack makes it easy for employees to contact each other and exchange documents or information.""The most valuable feature for me was the different channels.""With respect to being a clean and efficient communications platform, I think that it does the job quite well.""The feature that I have found most valuable is communication between team members."

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Cons
"If two people update the same file, it causes issues.""I'm not sure if there are areas of improvement. For us, it's working quite well.""In terms of improvement, it should have tutorials when you first have the opportunity to use it, to be able to really learn it.""The online applications have limited functionality compared to the local applications.""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.""I started working a lot on Microsoft Teams and I find it a bit vast. It should be divided out a bit so that someone can use it for basic functionality, like audio, video, and calls. Then, if someone wants more advanced functionality for file sharing and team creation, and so on, they could use a separate app.""In the next release, I would like to have a more intuitive tutorial.""Could include integration with other single sign-on solutions."

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"I would like to see the social sharing of blogs, announcements, or other news directly from the message corner.""I would like the text in chat to be more customizable.""I would like the in-meeting content sharing facility to be improved.""I would like to see a special feature for multiple people to collaborate on a document, working on it at the same time.""Slack does not have videoconferencing capabilities, which would have been nice.""I have found it cumbersome to create and set up groups, or channels.""Customization is something that Slack is lacking."

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Pricing and Cost Advice
"The pricing is high and has actually caused us to limit the number of licenses we purchase due to budgeting.""I think that we pay $9.99 USD per user, monthly."

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"We use the free version that does not have a license."

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Questions from the Community
Top Answer: Overall excellent product with great features, consider small and medium businesses to have at least basic ATP and DLP features.
Top Answer: 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.
Top Answer: We're a hybrid between Microsoft 365 Business Premium and Business Basic, depending on where a person stands in the company. Our headquarters staff is all Business Premium, while the rest of our staff… more »
Top Answer: The feature that I have found most valuable is communication between team members.
Top Answer: Customization is something that Slack is lacking. Otherwise, however, the user interface is very good.
Top Answer: Our internal team primarily used Slack for communication with each other. If two or three people were working on the same modules then they were able to share code and work together.
Ranking
Views
5,548
Comparisons
4,728
Reviews
16
Average Words per Review
633
Rating
8.7
Views
2,528
Comparisons
1,854
Reviews
8
Average Words per Review
358
Rating
8.3
Comparisons
Also Known As
Microsoft Office 365, Office 365 Enterprise, Office 365 Enterprise E1, Office 365 Enterprise E3, Office 365 Enterprise E5, Office 365 ProPlus, Office 365 Business, Office 365 Business Essentials, Office 365 Business Premium, Office 365 F1
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Overview

Office 365 is more than just Word, Excel, PowerPoint, and Outlook. It provides powerful services like business-class email, online storage, and teamwork solutions that you can access from anywhere. Bring teams and resources together with solutions like Microsoft Teams and Skype for Business that make working together more productive and enjoyable regardless of where participants are located. Easily implement security and privacy controls to help protect business data and devices against malicious threats and help you meet your compliance obligations. Automatic updates ensure your employees will always have the latest features and security updates.

Slack is where work happens. It’s a digital workspace that powers your organization — all the pieces and the people — so you can get things done.

Slack brings all your communication together in one place. It's real-time messaging, archiving and search for modern teams.

Offer
Learn more about Office 365
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Sample Customers
Me & the Bees Lemonade
Strava, The New York Times, Spotify, Blue Bottle Coffee Company, Eventbrite, Box, Circa, Stripe
Top Industries
REVIEWERS
Manufacturing Company25%
Computer Software Company17%
Financial Services Firm8%
Energy/Utilities Company4%
VISITORS READING REVIEWS
Computer Software Company27%
Comms Service Provider19%
Government7%
Financial Services Firm5%
REVIEWERS
Marketing Services Firm26%
Financial Services Firm11%
Computer Software Company11%
Government11%
VISITORS READING REVIEWS
Computer Software Company25%
Comms Service Provider18%
Financial Services Firm11%
Government6%
Company Size
REVIEWERS
Small Business49%
Midsize Enterprise21%
Large Enterprise30%
REVIEWERS
Small Business68%
Midsize Enterprise13%
Large Enterprise20%
Find out what your peers are saying about Office 365 vs. Slack and other solutions. Updated: March 2020.
535,544 professionals have used our research since 2012.

Office 365 is ranked 1st in Content Collaboration Platforms with 16 reviews while Slack is ranked 3rd in Enterprise Social Software with 8 reviews. Office 365 is rated 8.6, while Slack is rated 8.2. The top reviewer of Office 365 writes "Great vulnerability insights, offers very impressive cash savings, and offers great information security tools". On the other hand, the top reviewer of Slack writes "A clean and efficient communications platform that is good for large teams". Office 365 is most compared with Atlassian Confluence, Amazon WorkDocs, Citrix ShareFile, TeamViewer and Workplace by Facebook, whereas Slack is most compared with Symphony, ChatWork, SharePoint, Atlassian Confluence and Zoho Cliq. See our Office 365 vs. Slack report.

We monitor all Content Collaboration Platforms reviews to prevent fraudulent reviews and keep review quality high. We do not post reviews by company employees or direct competitors. We validate each review for authenticity via cross-reference with LinkedIn, and personal follow-up with the reviewer when necessary.