Amazon Lex provides both build and runtime endpoints. Each endpoint provides a set of operations (API). Your conversational bot uses the runtime API to understand user utterances (user input text or voice). For example, suppose a user says "I want pizza", your bot sends this input to Amazon Lex usin
curl \
-H "Authorization: $API_KEY" \
http://runtime.lex.us-east-1.amazonaws.com/bot/{botName}/alias/{botAlias}/user/{userId}/session/