What is Amazon 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.

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 Amazon 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

If you're unfamiliar with GraphQL, see the Getting started: Creating your first GraphQL API.

If you're building applications that consume GraphQL APIs, see Building a client application and Real-time data.

If you're looking for GraphQL resolver information, see the following:

JavaScript/TypeScript

VTL

If you're looking for Amazon AppSync example projects, updates, and more, see the AppSync blog.

API caching in Amazon AppSync is not eligible for the Amazon Free Tier.

Requests are not charged for authorization and authentication failures.

Calls to methods that require API keys are not charged when API keys are missing or invalid.