Opinionated article that doesn't land in my experience.
Slack search is awesome, allows links with previews, reminders, easy channel creations, bookmarking, threading to allow sub topics...
Better than email for the quick back and forth, better than voice that is harder to schedule and synchronic and doesn't keep records.
If it's really important, you should have a way to keep track besides the "quick communication" but that doesn't mean slack isn't a great tool by default. Just keep an eye on the data deletion policies.
Slack search is awesome, allows links with previews, reminders, easy channel creations, bookmarking, threading to allow sub topics...
Better than email for the quick back and forth, better than voice that is harder to schedule and synchronic and doesn't keep records.
If it's really important, you should have a way to keep track besides the "quick communication" but that doesn't mean slack isn't a great tool by default. Just keep an eye on the data deletion policies.