Below you’ll find a link to a diagram I created. In SAFe, there are work item types (Theme, Epic, Feature, Story, Task) These work item types are designed to span a specific period of time.
- A Sprint is 2 weeks
- 5 Sprints is a PSI
- A PSI is 10 weeks
- Features can span Sprints
- Story fits within a single Sprint
- Task should be sized to less than 8 hours of work