zulip/templates/zerver/help/include/create-streams-intro.md

In Zulip, streams determine who gets a message. They are similar to channels in IRC/Slack/Discord, chat rooms, and email lists.

We recommend setting up some streams before inviting other users to join Zulip, so that you can automatically subscribe everyone to the right set of streams.

If you later create additional streams, no worries! You can always add a group of users or all the members of another stream to a new stream.

!!! tip "" Add clear descriptions to your streams, especially public streams.