How Microsoft Teams overtook Slack in one year

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Microsoft Teams had been launched globally in March 2017. Since the beginning, only a few companies believed in his potential and invested in its adoption. At that time, when talking about collaboration hub or enterprise network, all the attention was on Slack, that was seen by many as THE enterprise social network. But one year later, are things still the same?


Doubtless, 2018 has been a great year for Microsoft Teams. Its success was slowly, but always growing. Nowadays, Teams is the fastest growing Microsoft app ever. Moreover, numbers are pretty clear. Statistics show a peak on the number of Teams users and more and more companies around the globe are moving towards Teams, literally the collaboration app of the future.

microsoft teams

The success of Teams is due to its visually attractive layout, its easy to use functionalities and similarities with other social networks, to which people are used. All this makes Teams very user-friendly, easy to use thanks to the integrations with other apps (SharePoint, Skype for Business, Outlook, To-Do, just to mention some). At Microsoft Ignite, Teams was the real protagonist and so in many other international events. And the market follows. In just one year we can say that Teams revolutionized the way of working, meeting and collaborating all over the world and more is yet to come.

Slack vs Teams

Slack is a well-known team collaboration hub. Slack success was related to the messaging functionality within a team, video calls, the possibility to store and share information and file, the integrations with a lot of enterprise apps, a free version for small teams and a very easy user adoption. But, nowadays, Teams also does all this. And even more.  The result? Officially, Teams overtook Slack per number of users.

slack vs teams

According to a new survey of 901 organizations across North America and EMEA from SpiceWorks, Microsoft’s aggressive strategy with Teams seems to work: 21% of all surveyed organisations were using Microsoft Teams as of November 2018, compared to 15% for Slack. Despite Teams closing the feature gap with Skype for Business this year, the latter is still being used by 44% of organisations, up 8% compared to two years ago.

teams overtakes slack

“The rise in the use of Microsoft Teams is likely influenced by the fact that it’s available at no additional cost to Office 365 users. And considering more than half of businesses use Office 365, it’s enticing organizations to give Teams a try. And while Slack offers a free version, functionality is limited, and organizations must pay a monthly per-user fee for a fully-featured version of the app,” explained Peter Tsai, Senior Technology Analyst at Spiceworks.

Microsoft Teams User Adoption: Plans for the future

The same survey cited before highlights the provision that Microsoft Teams is expected to experience the biggest growth over the next two years: 41% of organisations are expected to use the app by the end of 2020, compared to 18% for Slack. If this will turn true, we can expect Microsoft Teams adoption rates to be twice as high as Slack’s. At Microsoft Ignite 2018 it has been released the number of active users of Microsoft Teams: more than 329,000 organizations were using Teams worldwide, including 87 of the Fortune 100 companies. Big numbers that are destined to grow exponentially.

Silverside is experienced in user adoption strategies for Office 365 and Microsoft Teams specifically. The modern workspace is in Teams. The future is in Microsoft Teams. And we are here to help you be part of this future.

Download our e-Book Change made easy for Office 365: Wanting to use instead of having to and find out how we can help you to embrace Microsoft Teams and overcome the barriers of change.

If after having read this blog you are thinking about a possible migration from Slack to Microsoft Teams, you can read the next blog Transition from Slack to Microsoft Teams.