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Microsoft Teams vs Slack comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Jan 12, 2025

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
7.2
Microsoft Teams enhances collaboration and efficiency, saving time, reducing costs, and proving valuable during remote work.
Sentiment score
8.6
Organizations saw a 40% return with Slack, valuing its efficiency and productivity boost despite room for pricing improvements.
 

Customer Service

Sentiment score
6.6
Many prefer internal support as Microsoft's assistance varies in responsiveness and effectiveness, influenced by support tier and call volume.
Sentiment score
7.1
Most users are satisfied with Slack's support, appreciating strong documentation and responsive service, especially via Twitter and APIs.
Microsoft support is excellent, offering instantaneous assistance through either robo support or live personnel.
I have logged tickets for Office 365 and received responses within 24 hours, depending on the severity.
 

Scalability Issues

Sentiment score
7.7
Microsoft Teams scales efficiently for varied user sizes, with seamless integration and some potential file storage challenges.
Sentiment score
7.7
Slack is scalable, supports thousands of users effectively, and is rated highly for expanding teams despite management challenges.
Microsoft Teams is scalable, and I have successfully conducted sessions with close to forty people without significant issues.
Slack is endlessly scalable.
Slack is not as comprehensive as Microsoft Teams in terms of scheduling and hosting meetings.
 

Stability Issues

Sentiment score
7.7
Microsoft Teams is stable with minor network-related issues, receiving high ratings for reliability and robust cross-device functionality.
Sentiment score
7.7
Slack is generally stable across platforms, but occasional glitches and performance variations are noted, especially on mobile.
Microsoft Teams is stable once the setup is completed properly.
It integrates with various systems, allowing us to manage site reliability, availability, and reliability.
Occasionally, Slack behaves unexpectedly and shuts down, which can be irritating, especially when I am in the middle of a task.
 

Room For Improvement

Microsoft Teams requires enhanced integration, improved performance, better UI, security, and new AI features for optimal user experience.
Slack users want better integrations, notifications, security, and performance, with improved features to stand out from competitors.
AI capabilities should be integrated into Microsoft Teams to provide better transcript services and offer multiple language support.
Microsoft Teams could be improved through more synchronization with other platforms like Calendly and Gmail.
The biggest issue with Microsoft Teams is switching identities, especially when communicating with external organizations.
There is a need to add a call group feature to facilitate scheduling and conducting meetings within Slack.
Configuring chats and pinning in Teams is easier, even though Slack has these features, they are not intuitive enough to engage with.
 

Setup Cost

Microsoft Teams is cost-effective, often bundled with Office 365, offering flexible, affordable pricing with some geographical and feature-based variations.
Slack offers a free version, while paid plans with advanced features cost around $20 per user monthly for larger teams.
Microsoft Teams is economical when purchased as part of an Office 365 bundle.
Microsoft Teams comes with Office 365 licenses like E3, but there are options for those who prefer not to pay for Teams by using alternative products like Slack.
 

Valuable Features

Microsoft Teams excels in communication and collaboration with robust features, Office 365 integration, and flexible, user-friendly access.
Slack enhances productivity with seamless communication, rich integrations, cross-platform functionality, and customizable user experience features.
Microsoft Teams is also noted for its compliance with GDPR and SOC 2, ensuring data security and compliance.
The platform is user-friendly and has positively impacted our communication, allowing us to communicate with people from different countries and cities in real time.
It serves everything in one place and improves communication within organizations.
In managing releases via Slack channels, one major advantage over Teams is the ability to have threaded discussions, which helps in catching up on relevant discussions without the distraction of interleaved conversations.
The integration with Google Calendar is easy to use and allows us to receive notifications before meetings.
 

Categories and Ranking

Microsoft Teams
Ranking in Enterprise Social Software
1st
Average Rating
8.2
Reviews Sentiment
7.5
Number of Reviews
166
Ranking in other categories
Virtual Meetings (4th)
Slack
Ranking in Enterprise Social Software
3rd
Average Rating
8.4
Reviews Sentiment
7.8
Number of Reviews
75
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of April 2025, in the Enterprise Social Software category, the mindshare of Microsoft Teams is 12.7%, down from 18.5% compared to the previous year. The mindshare of Slack is 12.7%, up from 10.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Enterprise Social Software
 

Featured Reviews

Arun Srivastav - PeerSpot reviewer
Seamless presentation and collaboration enhance organizational productivity
There are three main areas for improvement: Firstly, AI capabilities should be integrated into Microsoft Teams to provide better transcript services and offer multiple language support. Secondly, it should allow participants to remain visible during presentations, enhancing interaction. Lastly, it needs broader integration capabilities with other products, like Salesforce ( /vendors/salesforce ), which is currently limited.
PaulButticaz - PeerSpot reviewer
A competitive solution that improves collaboration and productivity
Slack has been around for a long time, and it's an industry leader. Of course, Salesforce owns Slack now and is starting to integrate into it. I have attended Slack conferences and met with product and support managers. They're an excellent organization. Choosing Slack depends on the organization's size, so you need to plan your deployment and make sure you put some controls and standards in place and not just turn it on. If you're a Slack shop, you will have to have something like a Zoom or Microsoft Teams platform for when you need to do video conferencing internally or externally. Many shops have both products, but they use Slack for collaboration, chat, and so on, and use Teams for video and audio conferences. At the end of the day, Slack is missing those capabilities, so either you're going to be a Slack/Zoom shop or you're going to be a Microsoft Teams shop. I rate Slack an eight out of ten.
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Top Industries

By visitors reading reviews
Educational Organization
71%
Financial Services Firm
7%
Government
3%
Computer Software Company
3%
Educational Organization
84%
Computer Software Company
4%
Financial Services Firm
3%
University
1%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

Questions from the Community

What do you like most about Microsoft Teams?
The most valuable feature of Microsoft Teams for us is the ability to share files from OneDrive seamlessly.
What is your experience regarding pricing and costs for Microsoft Teams?
Microsoft Teams comes with Office 365 ( /products/office-365-reviews ) licenses like E3, but there are options for those who prefer not to pay for Teams by using alternative products like Slack ( /...
What needs improvement with Microsoft Teams?
The biggest issue with Microsoft Teams is switching identities, especially when communicating with external organizations. Users often don't know they have messages from another company unless they...
What do you like most about Slack?
Nowadays, we don't need to visit an HR portal. Our marketing and human resources teams directly share details about birthdays, upcoming events, and important dates in Slack. Whether it's a training...
What is your experience regarding pricing and costs for Slack?
I am not aware of pricing, setup costs, or licensing, due to my company's partnership with Slack.
What needs improvement with Slack?
Sometimes Slack behaves unexpectedly and shuts down without notification or support communication. There is a need to add a call group feature to facilitate scheduling and conducting meetings withi...
 

Comparisons

 

Also Known As

MS Teams
No data available
 

Overview

 

Sample Customers

Honeywll, AIRFRANCE, AccuWeather, Lilly
Strava, The New York Times, Spotify, Blue Bottle Coffee Company, Eventbrite, Box, Circa, Stripe
Find out what your peers are saying about Microsoft Teams vs. Slack and other solutions. Updated: March 2025.
845,406 professionals have used our research since 2012.