- In Journey Entry Nodes to determine which users enter a journey.
- In Journey Segment Split Nodes to direct users along a specific path within journeys.

Segment Nodes
- Trait Node: Restrict a segment to users with a specific trait value.
- Performed Node: Restrict a segment to users who have performed a specific action.
- And Node: Allow any users to join the segment if they satisfy one condition “And” another condition.
- Or Node: Allow any users to join the segment if they satisfy one condition “Or” another condition.
- Subscription Group Node: Restrict a segment to members of a subscription group.
- Manual Node: Specify a segment by manually uploading a CSV of users.
- Random Bucket Node: Randomly assigns a predetermined percentage of users to a segment.
- Keyed Performed Node: Like the performed node, but specialized to event entry journeys.