@Marvin How many levels of subflows are supported by Prefect?

The specific number of levels of subflows supported by Prefect is not directly mentioned in the documentation. However, it is stated that any flow written with Prefect can be used as a component in another flow, and that a subflow has the same relationship to its parent flow as a task does. This suggests that subflows can be nested within each other much like functions or modules in Python, but there is no explicit limitation on the depth of nesting provided in the documentation. You can read more about the concept of subflows in Prefect's blog post about workflow design patterns. If you need more clarifications or have concerns about limitations, it would be best to contact Prefect support directly.