Which Azure Cognitive Services service can be used to identify documents that contain sensitive information?

Azure AI Custom Vision is used for image classification and object detection tasks, not for analyzing text content in documents.

Azure AI Language service, specifically Conversational Language Understanding, is for understanding user intent and entities in conversational inputs, not for extracting structured data from documents to identify sensitive information.

Azure AI Document Intelligence (formerly Form Recognizer) is designed to extract structured data from documents, including key-value pairs, tables, and specific fields, which can then be analyzed programmatically to identify sensitive information like personally identifiable information (PII) or financial data based on custom rules or pre-built models.