A service for building conversational chatbots and voice assistants, combining automatic speech recognition (ASR) and natural language understanding (NLU) to interpret user intent.
In AIF-C01 (Domain 3) it is the specific service for conversational interfaces (as opposed to Bedrock Agents, geared toward orchestrating tasks with foundation models). Question: building a customer service bot with predefined intents → Amazon Lex.
Amazon Lex is a concept that can show up on the exam. Check the full guide to see it in context.