AWS AppSync enables developers to connect their applications and services to data and events with secure, serverless and high-performing GraphQL and Pub/Sub APIs. You can do the following with AWS AppSync:
Access data from one or more data sources from a single GraphQL API endpoint. Combine multiple source GraphQL APIs into a single, merged GraphQL API. Publish real-time data updates to your applications. Leverage built-in security, monitoring, logging, and tracing, with optional caching for low latency. Only pay for API requests and any real-time messages that are delivered. AWS AppSync supports AWS Lambda, Amazon DynamoDB, and Amazon Elasticsearch AWS AppSync features
Simplified data access and querying, powered by GraphQL Serverless WebSockets for GraphQL subscriptions and pub/sub channels Server-side caching to make data available in high speed in-memory caches for low latency JavaScript and TypeScript support to write business logic Enterprise security with Private APIs to restrict API access and integration with AWS WAF Built in authorization controls, with support for API keys, IAM, Amazon Cognito, OpenID Connect providers, and Lambda authorization for custom logic. Merged APIs to support federated use cases