AI Assistant platforms provide conversational AI capabilities integrated into the enterprise productivity stack — drafting documents, summarizing meetings and threads, retrieving organizational knowledge, automating routine tasks, and executing against user prompts across email, calendar, documents, and chat surfaces. Core capabilities include retrieval-augmented generation grounded in corporate content (with tenant-scoped access controls), multi-turn conversation with memory, tool use and action execution within connected applications, admin controls for usage and compliance, and audit logging of prompts and responses. The category spans suite-native assistants and independent enterprise assistants that federate across multiple sources.