There is an abundance of ways to communicate available in today's workplace, but still people feel they sometimes lack information.
Why an additional communication tool?
Even if you have chat software & email, it will easily become overwhelming and you lose track of things. With tool just for internal announcements, you'll always know where to go to get company wide
And of course you can integrate it with tools you already use so you can be sure to get the latest announcements into Slack and email (more coming).