| Interface | Description |
 | ICcowServiceLocator | Used by all CCOW objects to send the data to the service. |
 | IListenerRegistrar | Enables the context manager to maintain a list of client URLs for notifying web pages about committed context change transactions. |
 | IWebContextManager | Enables a context participant to join and leave a common web context session, and perform context change transactions. |
 | IWebContextSession | Enables a web context manager to be informed that it represents the active session for a point-of-use device. |