In my opinion, kanban tool should have taken off in popular usage, instead of tools like Slack.

If one is in a big org and using tools like Slack, you're most likely looking at yourself as a gigantic mess.

Kanban methodology in potential gives a better canopy style hierarchy to break out big into small chunks. I say potential because ultimately, none of this matters if there's no proper delegation and care at the top (let too many people create slack or groups or whatever, you're looking at chaos down the road).