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Microsoft Teams vs Slack Business - Enterprise comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Feb 15, 2026

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
5.8
Microsoft Teams enhances communication and efficiency, offering valuable collaboration, tool automation, and cost reduction benefits during remote work.
Sentiment score
3.7
Slack Business boosts productivity and organization, achieving 40% ROI despite moderate satisfaction and desired pricing improvements over Gmail.
I have seen a return on investment from using Microsoft Teams.
Technical Lead at a tech services company with 501-1,000 employees
I have seen a return on investment with Microsoft Teams, as it definitely increases productivity and saves time.
Sr. Quality Analyst at Appinventiv
I have seen good communication improvement working out within Microsoft Teams instead of what we were used to in previous tools, where we were lacking communication.
Senior Data Scientist at Evolvision Technologies
 

Customer Service

Sentiment score
6.3
Microsoft Teams customer service is generally positive, responsive, but improvement needed in response times for smaller businesses.
Sentiment score
5.8
Slack's support is praised for efficiency and effectiveness, with positive ratings despite minimal direct user interaction needed.
Microsoft support is excellent, offering instantaneous assistance through either robo support or live personnel.
CEO at Planfirma Technologies Private Limited
We have cases where it took more than six months to resolve very basic issues.
IT Project Manager at UkrSibbank
We have not needed to contact Microsoft support for the last six years.
Technical Lead at a tech services company with 501-1,000 employees
We tend to focus more on Workato for support, but internally we raise service requests with the infrastructure team for any issues related to Slack.
Integration Engineer
When I connected to Slack Business - Enterprise API, tutorials and documentation were available online.
Da at hanasoft
If something was beyond their hands, then it would only be escalated to the external Slack team.
Senior Consultant at a consultancy with 10,001+ employees
 

Scalability Issues

Sentiment score
7.8
Microsoft Teams is highly scalable, handling large user numbers effectively, despite minor licensing complexities, and receives positive scalability ratings.
Sentiment score
7.2
Slack Enterprise is highly scalable, supporting both small and large teams, though the free version has limitations.
We have around thousands of employees in my project using it simultaneously and it is working smoothly.
Technical Lead at a tech services company with 501-1,000 employees
Microsoft Teams is a scalable solution.
Master in Cyber Security at Ganpat University
Microsoft Teams can be scalable for more than 1,000 people, and I have seen video conferences with 5,000 participants, so the scale is incredible.
Senior Software Engineer at Endava
Slack is endlessly scalable.
Application Security Manager at Interact Intranet
Slack Business - Enterprise is a scalable product fitting for small businesses as well as enterprises, with no limitations on the number of users.
Da at hanasoft
Slack is not as comprehensive as Microsoft Teams in terms of scheduling and hosting meetings.
Data Engineer at BlazeClan Technologies
 

Stability Issues

Sentiment score
7.5
Microsoft Teams is generally stable, rated 8-9/10, with occasional issues linked to internet quality and specific devices.
Sentiment score
7.8
Slack Business - Enterprise is stable and reliable, with minor issues and high user ratings for performance and communication.
I appreciate the ability of Microsoft Teams to control the quality of the call.
IT Project Manager at UkrSibbank
The kind of issue is that it always asks for the password, and I think for Citrix or for a shared platform, it is not really easy to manage, and it is not stable.
IT Director at ATOS
Microsoft Teams is stable once the setup is completed properly.
CEO at Planfirma Technologies Private Limited
It integrates with various systems, allowing us to manage site reliability, availability, and reliability.
Application Security Manager at Interact Intranet
Slack's stability is a perfect 10.
Webflow Developer at Qureos
I do not see glitches, latency issues, or downtime.
Da at hanasoft
 

Room For Improvement

Microsoft Teams needs improvements in security, performance, synchronization, integration, and interface for enhanced user experience and productivity.
Slack Business requires enhancements in video, integration, notifications, organization, customization, security, AI, multimedia sharing, and scheduling.
AI capabilities should be integrated into Microsoft Teams to provide better transcript services and offer multiple language support.
CEO at Planfirma Technologies Private Limited
The biggest issue with Microsoft Teams is switching identities, especially when communicating with external organizations.
Microsoft Practice Lead at a tech services company with 11-50 employees
Microsoft Teams could be improved through more synchronization with other platforms like Calendly and Gmail.
Team Lead at a tech services company with 51-200 employees
We can also improve the creation of channels, particularly in terms of privacy, security, flexibility, and the addition of members to newly created channels.
Integration Engineer
There are a lot of integrations and custom integrations available, but I believe there are opportunities to make those integrations much easier and faster, particularly for business or non-technical people.
Co Founder at a tech consulting company with 11-50 employees
I would rate it a ten if it comes with some AI features, particularly using generative AI to produce summarization and other kinds of insights from communication in a more secure, data-secure way.
Senior Consultant at a consultancy with 10,001+ employees
 

Setup Cost

Microsoft Teams offers versatile pricing, often bundled with Office 365, with flexible licensing and integration into the Microsoft ecosystem.
Slack Business provides pricing from free to $20 per user, with paid options offering advanced features for larger teams.
Microsoft Teams is economical when purchased as part of an Office 365 bundle.
CEO at Planfirma Technologies Private Limited
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.
Microsoft Practice Lead at a tech services company with 11-50 employees
Regarding the license, the Microsoft 365 license I am taking is quite expensive, and every year it goes higher.
IT Manager at R K Khanna and Associates
 

Valuable Features

Microsoft Teams boosts productivity with superior communication, collaboration features, and integration, making it a preferred tool for businesses.
Slack Business - Enterprise excels with app integrations, customizable channels, and collaboration tools, surpassing competitors like Teams.
Teams offers the ability to record sessions and store them in OneDrive, which provides 1 terabyte of space.
CEO at Planfirma Technologies Private Limited
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.
Team Lead at a tech services company with 51-200 employees
The biggest advantage of Microsoft Teams is that it is a combined package where I can do chat, video conferencing, work on spreadsheets, documents, and other things with many people sitting at my desk, which makes work easy, especially with clients who are in remote locations, so it saves a lot of time.
IT Manager at R K Khanna and Associates
In my experience, Slack is a stable product for communication, and I appreciate its automation features and integration of AI capabilities for enhancing specific functions.
Webflow Developer at Qureos
Slack Business - Enterprise is beneficial for us primarily because the API was very beneficial, and that is the main one;
Da at hanasoft
We use the incoming webhook to push end results of automation, which makes our life easier by allowing us to easily check the status of our automation jobs through our corporate phone while in Slack itself.
Senior Consultant at a consultancy with 10,001+ employees
 

Categories and Ranking

Microsoft Teams
Ranking in Enterprise Social Software
2nd
Average Rating
8.2
Reviews Sentiment
6.8
Number of Reviews
178
Ranking in other categories
Virtual Meetings (4th)
Slack Business - Enterprise
Ranking in Enterprise Social Software
1st
Average Rating
8.4
Reviews Sentiment
5.6
Number of Reviews
83
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of May 2026, in the Enterprise Social Software category, the mindshare of Microsoft Teams is 7.1%, down from 12.6% compared to the previous year. The mindshare of Slack Business - Enterprise is 9.8%, down from 12.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Enterprise Social Software Mindshare Distribution
ProductMindshare (%)
Slack Business - Enterprise9.8%
Microsoft Teams7.1%
Other83.1%
Enterprise Social Software
 

Featured Reviews

Anna Virtsan - PeerSpot reviewer
IT Project Manager at UkrSibbank
Have streamlined daily workflow and task management but still face inconvenience from recent interface changes and limited integration options
There are challenges and issues in Microsoft Teams, such as after recent updates where group chats were combined with Teams, chats, and groups into one. Users have to work with settings to make it normal again so Teams are separated from chats, and that was a really inconvenient update. Many users ask me to help make it back again to separate Teams and groups from one-to-one chats. That's probably the worst update they've made recently. Additionally, there are some minor features, such as when I work with messages, I don't have an actual forward or quote option when replying to someone's message. I need to be careful not to miss the quote sign. For a lot of people, they are confused about where the quotes option is. I've received a couple of hundred support tickets just regarding this issue. The function to share email to Teams chat doesn't work sometimes due to our compliance policies, and sometimes it would be nice to be able to forward an email to the group chat and have further discussions. Microsoft Teams could improve by being less glitchy because it glitches a lot, leading to undelivered emails and undelivered messages. It would be beneficial if the MS application Shifts, which adds functionality to groups, could be integrated into the groups calendar. Currently, many teams don't use the app because it is not integrated with the general calendar or the Outlook calendar, making it basically a useless application. The platform needs less Copilot and more people. The general Copilot integration into the platform is less glitchy, but Microsoft Teams is quite heavy and glitchy sometimes. Stability depends a lot on compliance restrictions, policies, and quality of internet. Sometimes, when updates are enrolling, the platform glitches, breaks, or shuts down.
Akhil Viswam - PeerSpot reviewer
Senior Consultant at a consultancy with 10,001+ employees
Threaded collaboration has transformed how our team tracks tickets and monitors automation updates
One suggestion I would make for improving Slack Business - Enterprise is the support of multimedia such as images and videos that we can easily share through Slack. That would be great. Additionally, another thing is AI integration; if Slack has some AI capabilities to get insights about conversations or summarization, that would be a great feature. If Slack has an AI feature that can summarize a particular Slack thread and provide a summary of that, that would be a great feature for us. I would rate it a ten if it comes with some AI features, particularly using generative AI to produce summarization and other kinds of insights from communication in a more secure, data-secure way.
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Top Industries

By visitors reading reviews
Financial Services Firm
19%
Construction Company
9%
Marketing Services Firm
8%
Manufacturing Company
7%
Financial Services Firm
14%
Performing Arts
13%
Marketing Services Firm
7%
Construction Company
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business66
Midsize Enterprise46
Large Enterprise73
By reviewers
Company SizeCount
Small Business58
Midsize Enterprise13
Large Enterprise25
 

Questions from the Community

What is your experience regarding pricing and costs for Microsoft Teams?
My experience with pricing, setup cost, and licensing for Microsoft Teams is good and fine.
What needs improvement with Microsoft Teams?
Microsoft Teams already comes with rich qualities, and the impact on the IT professional is very large with great features in terms of collaboration, team activity engagements, and friendly emojis ...
What is your primary use case for Microsoft Teams?
My main use case for Microsoft Teams is team communications and collaborations, and sharing updates. For any task, we use Microsoft Teams. We share the specific builds for the distributions, and if...
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?
I am uncertain how Slack Business - Enterprise can be improved. Better notification controls, improved threading, and more integrations are all good features that seem relevant.
What is your primary use case for Slack?
My main use case for Slack Business - Enterprise is connecting between different teams and facilitating communication for teams. A quick, specific example of how my teams use Slack Business - Enter...
 

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 Business - Enterprise and other solutions. Updated: April 2026.
893,244 professionals have used our research since 2012.