Networking and Content Delivery
AWS AppSync
AWS AppSync provides managed GraphQL APIs and real-time data synchronization. It can aggregate GenAI job state, conversation metadata, and enterprise data behind one typed client contract.
Key points
- Resolvers connect schema fields to supported data sources or functions
- Subscriptions push selected mutations to connected clients
- Authorization modes can be combined with field-level design
When to use it
- Stream generation-job status changes to a web client
- Expose a typed assistant workspace over DynamoDB and Lambda data sources
Exam tips
- Choose AppSync when GraphQL and subscriptions fit client needs; API Gateway is broader for REST and HTTP APIs
- A GraphQL schema limits shape, not business authorization, so enforce ownership in resolvers