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Atlassian Confluence vs Microsoft 365 Business vs Slack Business - Enterprise comparison

 

Comparison Buyer's Guide

Executive Summary

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
6.9
Atlassian Confluence improves onboarding, centralizes knowledge, and is regarded as a cost-effective tool enhancing efficiency and satisfaction.
Sentiment score
7.8
Microsoft 365 Business enhances productivity and efficiency by reducing costs, improving communication, and offering scalable, secure cloud solutions.
Sentiment score
5.6
Slack Business Enterprise boosts productivity and collaboration, rated 7/10 for returns despite pricing concerns and varying user experiences.
It also provides good security and the ability for normal users to create simple applications without needing developers.
 

Customer Service

Sentiment score
6.5
Confluence users praise support's expertise but note issues with resolution speed, service limitations, and regional coverage variations.
Sentiment score
4.5
Microsoft 365 Business support is generally reliable, with users praising knowledgeability and responsiveness despite some improvement needs in response times.
Sentiment score
6.2
High customer satisfaction with reliable service, effective technical support, and strong documentation, reducing the need for external assistance.
This team manages all queries and uses various plugins, such as Tempo for time tracking.
It would be beneficial if Microsoft had more expert customer support staff.
We have had good support from Microsoft, with responsive and well-trained staff who are very polite.
I haven't needed any support from Microsoft with Microsoft 365 Business; in my three years, I haven't encountered any instances.
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.
 

Scalability Issues

Sentiment score
7.2
Atlassian Confluence scales well for many users; however, cloud setups and costs can present challenges for some organizations.
Sentiment score
7.6
Microsoft 365 Business is scalable with easy deployment and adaptability, though growth may increase costs and present capacity issues.
Sentiment score
7.5
Slack Business-Enterprise edition is praised for its scalability, accommodating diverse team sizes despite occasional large user management challenges.
Slack is endlessly scalable.
Slack is not as comprehensive as Microsoft Teams in terms of scheduling and hosting meetings.
A user who engages with Slack daily and utilizes various features would provide more valuable insights.
 

Stability Issues

Sentiment score
7.9
Confluence users praise stability but note occasional connectivity issues; setup quality and updates influence performance and data integrity.
Sentiment score
7.9
Microsoft 365 Business is praised for stability and reliability, with occasional minor issues in Teams and Excel.
Sentiment score
7.8
Slack Business-Enterprise is stable with minor issues, praised for robust performance, especially the desktop version scoring highly.
The stability of Microsoft 365 Business is rated nine out of ten.
The file-sharing feature in Microsoft 365, specifically using OneDrive, is unreliable.
It works properly, and I have never needed to contact support.
It integrates with various systems, allowing us to manage site reliability, availability, and reliability.
Slack's stability is a perfect 10.
Occasionally, Slack behaves unexpectedly and shuts down, which can be irritating, especially when I am in the middle of a task.
 

Room For Improvement

Atlassian Confluence struggles with integration, pricing, and user access, needing improvements in collaboration, customization, and interface efficiency.
Microsoft 365 Business needs enhancements in security, pricing, integration, user interface, scalability, support, updates, and training resources.
Slack Enterprise needs better third-party integrations, user interface, notifications, video call quality, and enhanced security and customization features.
The software does not currently have any kind of AI integration.
This chart used AI to offer users the option to create it based on the data.
Providing Power BI for a lower package, such as e3, would be beneficial.
Microsoft has very poor security, and Defender is ineffective.
The comprehensive nature of the solution justifies the cost.
We can also improve the creation of channels, particularly in terms of privacy, security, flexibility, and the addition of members to newly created channels.
Configuring chats and pinning in Teams is easier, even though Slack has these features, they are not intuitive enough to engage with.
There is a need to add a call group feature to facilitate scheduling and conducting meetings within Slack.
 

Setup Cost

Atlassian Confluence pricing varies with user base and setup, with costs increasing for plugins and external access.
Microsoft 365 Business offers flexible licensing and valuable features, starting at $6, though pricing complexity and expense are concerns.
Enterprise users find Slack pricing reasonable but costly compared to alternatives, with paid plans preferred for security needs.
It streamlines license management and renewal processes, which can otherwise lead to complications or lapses in access.
Microsoft 365 is cost-intensive, and alternate options like OpenOffice, LibreOffice, or Google Workspace are not as expensive.
The solution might be considered pricey for some, however, the comprehensiveness of the suite justifies its cost.
It could be more affordable.
 

Valuable Features

Atlassian Confluence excels with ease of use, collaboration tools, Jira integration, customizable templates, and cross-device accessibility.
Microsoft 365 Business enhances productivity with seamless tools, real-time collaboration, and efficient global file sharing through a subscription model.
Slack Business - Enterprise boosts productivity with seamless communication, app integration, customization, and effective collaboration tools like Slack Canvas.
This tool provides a single repository for interacting with the entire team.
Using Teams helps our team's productivity because rather than having to make a proper chart again, if I am reviewing someone else's work and I find a mistake, I'll just do it in Excel and it automatically gets updated in the PPT.
Microsoft 365 Business integrates well and improves communication, cooperation, and security.
The subscription model of Microsoft 365 Business is beneficial since it provides continuous updates, including functional updates and transformations of the product.
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.
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.
 

Mindshare comparison

Corporate Portals (Enterprise Information Portals) Market Share Distribution
ProductMarket Share (%)
Atlassian Confluence13.2%
SharePoint28.8%
Liferay Digital Experience Platform19.1%
Other38.9%
Corporate Portals (Enterprise Information Portals)
Mobile Device Management (MDM) Market Share Distribution
ProductMarket Share (%)
Microsoft 365 Business7.1%
Jamf Pro21.6%
NinjaOne8.1%
Other63.199999999999996%
Mobile Device Management (MDM)
Enterprise Social Software Market Share Distribution
ProductMarket Share (%)
Slack Business - Enterprise15.8%
Microsoft Teams14.0%
Atlassian Confluence8.9%
Other61.3%
Enterprise Social Software
 

Featured Reviews

Rabindra K Maharana - PeerSpot reviewer
Editing features improve document accessibility
There is a holiday calendar, however, I need to install an app or add something to it. The add-on feature is not readily available or well-documented. Guidance on this should be available in a forum. Recently, I used a feature in another tool—perhaps GitHub—where it helped prepare a chart. It involved listing resources, like having fifteen people in the X team, ten in the Y team, and seven in the Z team. It created a bar chart showing these numbers. This chart used AI to offer users the option to create it based on the data. It was then created on a separate page and made available.
CharlesBrewer - PeerSpot reviewer
Price and reliability need improvement while general tasks are streamlined
The pricing for Microsoft 365 is too high, and quality-wise, it does not meet high standards. The operating system is outdated and inadequate. Microsoft has very poor security, and Defender is ineffective. In terms of collaboration and file sharing, OneDrive is very clunky and has frequent sync issues. It also crashes a lot and is unreliable.
Awais Mehmood - PeerSpot reviewer
Automation features and user-friendly interface support seamless communication
Slack is very supportive in terms of communication between my colleagues and clients. While working with the reimbursement feature, I found the automation capabilities on Slack to be incredibly useful, allowing me to automate messages for specific dates or times and even to greet someone on their birthday. I haven't specifically used the channel organization feature of Slack, as I am added to channels, but I use it with Airtable, which automates notifications to a specific Slack channel when a user fills out a form on our website. 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.
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Top Industries

By visitors reading reviews
Financial Services Firm
15%
Manufacturing Company
11%
Computer Software Company
10%
Government
8%
Performing Arts
15%
Manufacturing Company
10%
Computer Software Company
8%
Educational Organization
7%
Performing Arts
17%
Computer Software Company
13%
Financial Services Firm
12%
University
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business38
Midsize Enterprise26
Large Enterprise52
By reviewers
Company SizeCount
Small Business110
Midsize Enterprise44
Large Enterprise101
By reviewers
Company SizeCount
Small Business54
Midsize Enterprise13
Large Enterprise21
 

Questions from the Community

What do you like most about Atlassian Confluence?
The most valuable feature of the solution stems from its document-controlling feature. In Atlassian Confluence, contr...
What is your experience regarding pricing and costs for Atlassian Confluence?
With Atlassian, the costs are reasonable. Although higher than before when we used multiple platforms and licenses, h...
What needs improvement with Atlassian Confluence?
There's room for improvement in the way folders are structured in Atlassian Confluence. Sometimes it's frustrating wh...
What do you like most about Microsoft 365 Business?
The product's initial setup phase was straightforward.
What is your experience regarding pricing and costs for Microsoft 365 Business?
I have no idea about the pricing of Microsoft 365 Business, since I'm not the party concerned.
What needs improvement with Microsoft 365 Business?
I don't have knowledge about the benefits of Advanced Threat Protection within Microsoft 365 Business, such as the De...
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 b...
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?
From my perspective, a disadvantage of Slack compared to Teams is that connecting between the apps can be a bit diffi...
 

Also Known As

Confluence
Microsoft 365 E3, Microsoft 365 E5, Microsoft 365 F1, MS 365 Business
No data available
 

Overview

 

Sample Customers

Facebook, Skype, Microsoft, NASA, Netflix, Adobe, Bonobos, LinkedIn, Pfizer, Citi.
Urban Agriculture Co., The Detroit Wallpaper Co., TransBlue Facility Management, Garner Food Company
Strava, The New York Times, Spotify, Blue Bottle Coffee Company, Eventbrite, Box, Circa, Stripe
Find out what your peers are saying about Microsoft, Atlassian, Liferay and others in Corporate Portals (Enterprise Information Portals). Updated: September 2025.
868,654 professionals have used our research since 2012.