What happened to Slack today

You’ve been busy. I’ve been busy. But people are talking about Slackall over Twitter, so let me catch us both up.
All the ruckus concerning Slack and its publicly traded stock appeared to kick off with a Business Insider story, which had the following headline:
Slack just scored its biggest customer deal ever, as IBM moves all 350,000 of its employees to the chat app
Given the context of the simmering Slack versus Teams battle, having Slack win what appeared to be a huge, new contrac