Disclosed is an approach for allowing an entity to perform semantic analysis upon private data possessed by an enterprise, and to automatically perform categorization of that data for processing within the enterprise. A semantic API can be provided to allow the enterprise to provide the private data to a semantic analysis system, even when the semantic analysis system is configured as a multi-tenant system that handles other items of public or private data. A rules-based routing architecture may be provided to facilitate analysis and routing of analyzed messages to the appropriate destination within the organization.