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Over what? Teams is currently eating Slacks lunch.

I'm so tired of hearing this argument. The amount of revenue generated by customers who use only Microsoft Teams without an Office365 subscription is exactly $0 [1]. MS gives you exactly 2 options to get teams:

1. Free

2. Included as part of Office365.

Teams is currently eatings Slacks lunch, but the lunch was paid for by a corporate IT guy who switched to Office365 so he could lay off some IT admins and save some money compared to managing an on-premise Exchange server.

[1](https://www.microsoft.com/en-us/microsoft-365/microsoft-team...)

I don't understand. What argument are you tired of hearing? Teams has more users than Slack. Doesn't matter how/why they got them.

Captive users don't really count.

But lots of Slack users are captive as well (e.g., when CIO licenses Slack for <$FORTUNE_500_CO> )

Slack is expensive, nobody randomly buys it for every employee

They totally do, especially at big companies. You need to show that you made a difference, and rolled out new communication platform for the whole company, not just for 5%.

Why not?

Really? What's the logic behind that?

We don't have _less_ staff due to migrating from Exchange Server to EXO -- quite the opposite (and the remainder of the M365 stack has significantly grown IT, as well).

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