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Comment by silvester23 | Hacker News Reader

Glad to see them doing well. Working for a company that legally cannot use services that are not self-hosted can be quite a challenge and Mattermost really is a godsend in that regard.

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We're under no legal requirement but I simply don't trust Slack employees to be good stewards of our data. On a UI/UX basis, Slack and Discord are far superior to Mattermost, so hopefully they can use this funding to close that gap.

Probably a good call. Slack trains recommender systems w/ all user data mixed together. Although w/ attempts to preserve privacy... See their paper from recsys '18 Vancouver.

The referenced paper: https://dl.acm.org/citation.cfm?id=3241726

Recommeneder for what ?

The only recommendations I remember on Slack are for channel participation - accidental suggestions to leave some I don't really read any much, and to join some I may be interested in.

YMMV, but for me that's a very low value feature.

The same for me. That's why I was asking.

Isn't Slack based on Mattermost?

No, not in the slightest.

https://www.mattermost.org/why-we-made-mattermost-an-open-so...

What industry?

Electric utility and energy trading.

Am I assuming correctly that the idea behind this is that you self-host everything, to be isolated from energy failures that could have cascading effects? Or is it more due to security reasons to be harder of a target?

As far as I'm aware (I'm not exactly central to our information security processes), it is more of the latter.

Due to the amount of electric power we control, we, as a company, have been deemed critical infrastructure by the state and as such, we have to comply with rather rigorous information security standards.

We do, however, also have an uninterruptible power supply for the most critical hardware.

We switched to mattermost from slack. We're in trading.

Even for companies that aren't in trading, I can't think of many reasons why anyone would want to switch back to Slack on an organizational basis. Public communities, sure. But organizationally? No contest IMHO.

Most companies don't have the infrastructure and staff needed to host an application like this and take care of security, ongoing maintenance, updates etc. Much easier to pay a few bucks per user and trust someone else to handle it.

That 'few bucks per user' is a bit misleading.

Slack's cheapest business plan is usd $7 / month / seat.

Hosted mattermost is usd $3 / month / seat.

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