Amazon Lex
Build voice and text chatbots
A service for building conversational chatbots using intents and slots, understanding both text and voice (the same technology as Alexa); typically calls Lambda for business logic and integrates with Amazon Connect.
- Cost$ Low
- Difficulty●●●●●
- Costs money when idle?No
- Serverless
- In examsCLF · SAA
Think of it asLike a call center agent trained on a script: hears what the customer wants, asks for any missing information, then hands it off for processing.
When to use it
✓ Use it when
You need a chatbot or IVR with a structured conversation flow.
✗ Avoid it when
You need free-form conversation with flexibly generated answers → Bedrock.
Common uses
- Appointment booking bot
- Call center IVR with Amazon Connect
- Order status lookup bot
What does it cost?
- Pricing model: Charged by the number of text and voice requests processed.
