IInteractableView provides the most high-level, abstract view available of a conceptual "interactable," instances of which represent the targets of transitive user intent and agency in an experience; in other words, when the user is trying to do something, interactables are what they're trying to do it to.
This interface is used internally in Interaction SDK logic, but because of its highly abstract nature and lack of information about the type of interaction is represented, you will typically work with descendant types rather than with IInteractableView directly.