For me this was different years ago, when Slack helped our company's people (consultancy) to find each other and share knowledge much more effectively than the previous method, mailing lists.
In a number of companies / assignments, Slack was introduced "from the trenches" and adopted officially later on. You don't get a tool to rise up from the trenches if it doesn't fulfill a need - that other, comparable tools also fill, especially now that a number of good competitors have jumped on the wagon.
In a number of companies / assignments, Slack was introduced "from the trenches" and adopted officially later on. You don't get a tool to rise up from the trenches if it doesn't fulfill a need - that other, comparable tools also fill, especially now that a number of good competitors have jumped on the wagon.