HotDocs Hub is a modular, off-the-shelf suite of commonly-needed components for HotDocs integrations. Applications that integrate with HotDocs typically provide several additional features for controlling how HotDocs resources are used. For example, HotDocs Template storage, user authentication, and Interview generation. The Hub supplies these components without any additional development effort. When users interact with the Hub, it is either through the Hub's own user interface or through your own custom-built user interface, using the Hub APIs to deliver HotDocs resources.