AWS AppSync

Accelerate application development with serverless GraphQL and Pub/Sub APIs

250k API requests free

per month for 12 months with the AWS Free Tier

What is AWS AppSync?

AWS AppSync is a serverless GraphQL and Pub/Sub API service that simplifies building modern web and mobile applications.

AWS AppSync GraphQL APIs simplify application development by providing a single endpoint to securely query or update data from multiple databases, microservices, and APIs.

AWS AppSync Pub/Sub APIs make it easy to create engaging real-time experiences by automatically publishing data updates to subscribed API clients via serverless WebSockets connections.

Simplify data access with GraphQL APIs (1:23)

Benefits

A single data API

Power your applications with the right data, from one or more data sources, with a single network request using GraphQL. AWS AppSync securely connects your GraphQL API to data sources like AWS DynamoDB, RDS, OpenSearch, and Lambda. Adding caches to improve performance, authentication to secure your data, and client-side data stores that keep off-line clients in sync are just as easy.

Real-time data experiences

Publish real-time data updates from any event source to subscribed web, mobile, and IoT clients by extending your GraphQL API to include subscriptions. Or, start with a simple Pub/Sub API without GraphQL. Either way, AWS AppSync handles the creation of serverless WebSockets connections, message broadcast, and fan out to up to millions of connected clients.

100% serverless

AWS AppSync offers fully managed GraphQL API and Pub/Sub API setup, administration, auto-scaling, and high-availability. Easily secure, monitor, log, and trace your API via built-in support for AWS WAF, CloudWatch and X-Ray. Pay only for requests to your API and for any real-time messages delivered to connected clients.

How it works

AppSync GraphQL APIs
AppSync Pub/Sub APIs

AppSync GraphQL APIs
GraphQL APIs built with AWS AppSync give front-end developers the ability to query multiple databases, microservices, and APIs from a single GraphQL endpoint.
AppSync Pub/Sub APIs
Pub/Sub APIs built with AWS AppSync give front-end developers the ability to publish real-time data updates to subscribed API clients via serverless WebSockets connections.

Use cases

Unified data access
Unified microservices access
Offline application sync
Real-time collaboration
Real-time chat application
Real-time IoT dashboard

Unified data access
Unified data access

Retrieve or modify data from multiple data sources (SQL, NoSQL, search data, REST endpoints, and serverless backends) with a single call. Query and create relations between data sources using GraphQL connections.

Additional resources: Tutorial
Unified microservices access
Unified microservices access

Access and combine data from multiple microservices running in containers in a VPC, behind a REST API endpoint, a GraphQL API endpoint, and more, in a single interface.

Additional resources: Tutorial

Sample code examples: Airline, E-Commerce
Offline application sync
Offline application sync

Automatically synchronize data between mobile/web applications and the cloud with AWS AppSync and Amplify DataStore, an on-device persistent storage engine with built-in support for data versioning and conflict detection and resolution.

Additional resources: Tutorial
Real-time collaboration
Real-time collaboration

Broadcast data from the backend to all connected clients (one-to-many) or between clients (many-to-many), such as in a second screen scenario where you broadcast the same data to all clients, who can then reply.

Additional resources: Tutorial
Real-time chat application
Real-time chat application

Build conversational mobile or web applications that support multiple private chat rooms, offer access to conversation history, and queue outbound messages, even when a device is offline.

Additional resources: Tutorial
Real-time IoT dashboard
Real-time IoT dashboard

Access IoT device data sent to AWS IoT to build real-time dashboards in a mobile or web application that visualizes telemetry from a connected IoT device, like a car.

Additional resources: Tutorial