Slack vs Teams: Which is best for your business?

The global market for collaboration tools for remote and hybrid teams is booming and competition is fierce. By the end of 2024, revenue is predicted to reach US$15.05 billion of which Microsoft Teams will have the lion’s share of users. Teams’ growth has been partly fueled by it being part of the Office 365 bundle, however, Microsoft has announced its intention to “unbundle” Teams in a bid to avoid accusations of “uncompetitive behaviour”. This follows rival Slack’s formal complaint to the European Commission. As competition opens up and both these tools continue to evolve, you might be evaluating Slack vs Teams and wondering which will be best for your business.

 The Slack and Teams apps summarised.

Slack is a real-time messaging and collaboration app in which participants can share, search and archive files. You can also use channels, team groups or direct messaging. There is a free version or a paid version (if you need more features or storage).

Microsoft Teams is known most for its additional video-conferencing and its deep integration with Microsoft business applications. At the time of writing, it is part and parcel of Office 365 and available for Office 365 users at no extra cost. For businesses not in a Microsoft environment, there is a free version and a paid version.

 How easy is it to collaborate in Slack vs Teams?

These tools are all about collaboration so how well do they perform?

Teams integrates seamlessly with Outlook, SharePoint and OneDrive, making file sharing and collaboration much easier than it is in Slack. While Slack also allows for file sharing, it doesn’t have the same level of integration. If you are already in a Microsoft environment, Teams is a natural fit. We’d recommend you look no further. Adding Slack to your Microsoft tech stack will add a level of complexity you are unlikely to need.

On the other hand, if you’re operating in an alternative environment such as G Suite, its worth taking a closer look at Slack although you might not need much more than what is already available in your Google Workspace with Chat (messaging) and Meet (video conferencing) and Spaces (channels and groups).

Which collaboration software is the most secure?

Teams wins, hands down. You get enterprise-grade security and compliance in Teams that includes end-to-end encryption, data loss prevention, frequent updates, automated security patching and Multi-Factor Authentication. If security is paramount or if compliance is an issue in your line of business, Teams should be your first choice. Slack has security features too but these are not as extensive; Microsoft spends an unrivalled $1 billion USD a year on security that protects their customers’ data from cyberthreats.

 Which collaboration app do users prefer?

Slack has a strong fan base in certain communities; software developers don’t just prefer Slack, they love it. If you’ve recently hired someone who is used to working in Slack, be prepared for a pretty strong argument for your business to adopt it. Custom web hooks, APIs, extensive use of bots and automations, and a wide range of integrations in Slack appeal to the techies. While Teams’ integration with core office applications makes file sharing easier, Slack has an extensive library of third-party app integrations and a robust API. This means that Slack makes it easy to connect with a wide range of tools and services. If you have a “best of breed” approach to building your digital workspace, Slack is a strong contender.

On the other hand, core business and service teams tend to prefer Teams. Its (Microsoft) familiar interface, deep integration with other Microsoft apps and heightened security wins over Slack.

 Which app makes it easier to organise work, Slack or Teams?

Slack’s interface focuses on simplicity and customisation and has a comparatively “clean” user interface. Although Teams might not feel so smooth, it leverages the power of integration and file sharing in a workspace where everything you need is in the same place.

Teams organises communication into channels within a team. It’s well-suited for organisations with multiple departments and project teams. Slack uses channels and workspaces for organising conversations. In the Slack vs Teams debate, you will want to make sure you have evaluated both tools in line with your specific business needs.

 Common problems with collaboration tools for remote and hybrid teams.

There are common problems with all collaboration tools: “Where can I find that file that we were all just working on?” and “Did you send me that file on email or on chat? I can’t find it.”

The trick is to set rules around what purpose channels have and where data is stored. Microsoft Azure has lots of tools that help administrators automate file storage and control user access. This helps to prevent chaos and problems finding files. But you will never beat good old-fashioned training in best practices, drawn up for your specific needs, around file storage and channel usage.

 Slack vs Teams or both…?

You might be wondering whether you should bend to employee pressure and allow some teams to use their app of choice.

There might be times when your staff are invited to join another company’s Slack or Teams channel. For example, you’ve outsourced a piece of development and the external team work on Slack. Your internal project sponsor will need access to that channel. That’s okay. But the situation that’s not okay is when a department in your organisation decides to create its own internal channel, using a different tool. This internal adoption of multiple collaboration tools is a fast track to chaos and promotes a culture of working in silos. It also gives you double the administration time and costs. If you are having trouble controlling usage of one tool, adding another won’t help.

We recommend you choose one collaboration tool over another and focus on embedding it in the culture and operation company-wide. Putting rules and processes in place around file storage and usage will be fundamental to success.

 Conclusion: Slack or Teams

Slack is a popular choice for non-Microsoft businesses and smaller operations. Its snappy, clean interface and extensive integration makes it a powerful tool in your tech ecosystem. You will need to add on a video conferencing tool and other applications but there are literally hundreds to choose from. And your dev team will love it!

When it comes to Slack vs Teams, Teams should be first choice for any business already in a Microsoft environment and it should be the only collaboration tool in use internally. It’s also the top contender for businesses that put security and compliance first. You will be in safer hands and have more control over user permissions and access.

We can’t help you with Slack, but we can help you implement Teams and help you set the rules and processes that will help make it a success. Get in touch if you’d like to know more.

More Frequently Asked Questions About Slack vs Teams

User Experience and Usability

Which is more user-friendly, Slack or Teams?

Slack is often praised for its intuitive interface and ease of use, especially for new users. Microsoft Teams, while offering deep integration with Office 365, might have a steeper learning curve due to its comprehensive feature set.

Collaboration and Productivity

How do the collaboration features differ between Slack and Teams?

Slack offers robust chat functionality, file sharing, and integrates with numerous third-party apps for project management and productivity. Teams is known for its seamless integration with Microsoft Office apps, making it a strong candidate for organisations heavily invested in the Microsoft ecosystem.

Integration with Other Software

Can Slack integrate with Office 365 as well as Teams does?

Slack has made strides in integrating with Office 365, offering various plugins and add-ons. However, Teams is designed as part of the Office 365 suite, providing unmatched native integration with Microsoft products like Word, Excel, and SharePoint.

Suitability for Large Organisations

Which platform is better for large organisations?

Microsoft Teams is often favoured by large organisations due to its comprehensive integration with Office 365 and advanced security and compliance features. Slack, however, is also suitable for large teams, especially those looking for flexible app integrations and a quick setup.

Pricing and Cost

How does the pricing of Slack compare with that of Teams?

Slack offers a free tier with limited features and paid plans that increase in price based on additional features and integrations. Teams is included with Office 365 subscriptions, which may be more cost-effective for organisations already using Office 365.

Video Conferencing

Is there a difference in the quality of video calls between Slack and Teams?

Both platforms provide high-quality video conferencing features. Teams might offer a slight edge in terms of integration with Office 365 apps during meetings, but Slack also delivers a robust video calling experience, especially with its recent updates.


Which platform offers better security features?

Teams and Slack both take security seriously, offering features like two-factor authentication, encryption in transit and at rest. Teams, being part of the Office 365 suite, may offer deeper compliance certifications and data governance tools suited for industries with stringent regulatory requirements.

Using Slack and Teams Together

Can I use both Slack and Teams together effectively?

While it’s possible to use both platforms together, it may lead to confusion and inefficiencies without clear guidelines. Some organisations choose to use Teams for internal communication and collaboration, while using Slack for communication with external partners and clients.

Notification Management

What are the major differences in notification management?

Slack offers detailed customisation options for notifications, allowing users to tailor alerts based on channels, direct messages, and keywords. Teams also provides notification settings, but the focus is more on integration with email and Office 365 tools.

Mobile App Performance and Features

How do the mobile apps of Slack and Teams compare?

Both Slack and Teams offer mobile apps that support the core functionalities of their desktop counterparts. Users report that both apps are reliable and user-friendly, making it easy to stay connected and productive on the go.


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