- Permanently modify the data in a view
- Analyze users by single or multi-session conditions
- Compare behavior metrics for groups of users like Converters vs non Converters
- Isolate and analyze specific conversion paths using conversion segments
A segment is a subset of your Analytics data. Segments let you isolate and analyze those subsets of data so you can examine and respond to the component trends in your business. You can also use segments as the basis for audiences. A segment is made up of one or more non-destructive filters (filters that do not alter the underlying data). Those filters isolate subsets of users, sessions, and hit.
Learn more here: https://support.google.com/analytics/answer/3123951