https://thenextweb.com/microsoft/2018/07/12/microsoft-teams-new-free-plan-looks-like-a-better-deal-than-slacks/

It’s not secret Slack has dominated workplace communication among tech companies the last few years, but Microsoft began to fight back when it introduced Teams back in 2016. There was just one problem: Teams didn’t have a free option. That changes today.

A free tier is pretty much essential for smaller businesses and companies. Slack has one, and it’s an easy way to onboard customers in hopes they’ll upgrade later. In a clear attempt to one-up Slack, Microsoft’s Teams is actually surprisingly robust. It includes support for up to 300 people – which should cover most small businesses –  and includes the following features: