Learn how to implement unauthenticated GraphQL operations with AppSync using API keys, Lambda authorizer or AWS_IAM and their pros & cons.

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AppSync doesn't natively support unauthenticated API calls, but you can implement this functionality using three approaches: API Keys (easiest but requires periodic renewal), Lambda Authorizers with shared secrets (more control but additional costs), or AWS IAM via Cognito Identity Pool (fine-grained control, free but complex setup). Each method has distinct trade-offs between simplicity, cost, control, and scalability.

AppSync: how to implement unauthenticated operations