What is Workout Builder or structured workouts?
The Workout Builder or structured workouts is a format inside the TrainingPeaks.com software that allows for your workout to be exported and used in various smart trainers and bike computers.
Each of the workouts in a Workout Builder plan has been built so that you have a visual representation of the workout with interval and rest periods displayed. This will allow you to see exactly the design of the workout as well as export it.
It will look like this:

When you purchase a plan in Workout Builder format you will be able to easily export your workout to your computer to be used in your favorite indoor training app like Zwift, or directly to your computer head unit like a Garmin. AND if you use the TrainingPeaks IQ app linked to your Garmin, then it will automatically place it in your Garmin
Compatibility with apps and head units