Lex AI is a fully managed chatbot development tool that enables users to design, build, test, and deploy conversational interfaces for voice and text in applications. Its main purposes include automating customer service, enabling self-service through chat or voice, and streamlining enterprise workflows. Unique features are advanced natural language understanding, multi-turn dialogue management, seamless integration with backend logic, and context-awareness for project or document assistance, making it suitable for both customer-facing and internal productivity use cases.