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I know of at least one big tech company that uses a self-hosted, self-contained Mattermost instance, hosted with a major cloud provider totally separate from all their infra, for communication in major outages when all their internal tools are down.
It’s still used pretty heavily in enterprise and high security environments.
High security? Without encryption?
They’re not connected to the Internet at all in a lot of cases.
Plus these large organizations want to be able to read the chats in the DB for compliance and legal reasons.
I know of at least one big tech company that uses a self-hosted, self-contained Mattermost instance, hosted with a major cloud provider totally separate from all their infra, for communication in major outages when all their internal tools are down.
If it’s the same one I’m thinking of they had to use saws to cut into their data centers after a major outage.