AWS AppSync

AppSync is a fully managed AWS service that handles the infrastructure for building and deploying GraphQL APIs at scale. It connects smoothly to Lambda, RDS, DynamoDB, Elasticsearch, and HTTP endpoints, allowing you to compose data from multiple sources in a single GraphQL schema.

Best for teams already invested in AWS and wanting minimal backend operations. AppSync handles authentication, caching, and real-time subscriptions out of the box, though the GraphQL-to-resolver mapping has a learning curve for developers new to the platform.