Example: types/user.graphql
For complex logic (external APIs, aggregation, business rules), you need Lambda resolvers. Treat each Lambda as its own micro-project inside the repo. appsync repo
Start by cloning a starter template (AWS provides aws-samples/aws-appsync-graphql-schema-repo ), enforce schema linting on day one, and never manually edit a resolver in the AWS Console again. Example: types/user