[Spivak]

Like just about any IT service you call your ops team? Slack offers value in being hosted for sure but if you're worried install difficulty then we're in the world of on-prem services. Matrix is easy compared to some paid products I've used.

[jmagoon]

I've worked for a few small startups and smaller IT teams in larger corps, so the option of "call your ops team" isn't really feasible, so in that sense Slack wins because it's easy enough for the business owners to set it up, send out the email invites, and feel that it's relatively secure. I think Matrix is an all around better option, but just believe that they are missing why small companies or strapped teams pick Slack in the first place.