Ohn, I found Slack is interesting, but never has experience using cloud as IT/Informatician. It looks easy and a lot of features. As said in my discussion, they seems to care much about data safety and privacy. They also have many customer support channel. Their business survival depends on reputation, I don’t think they will take risk for not do what to do to keep all safe. Bu the way, I don’t mean this is best choice for healthcare or else just may be for to get to know Saas.
Good news !They offer a testing plan free of charge !