AWS AppSync is a managed service that uses GraphQL to make it easy for applications to get exactly the data they need by letting you create a flexible API to securely access, manipulate, and combine data from one or more data sources.

The Amplify Framework allows developers to create, configure, interact and implement scalable mobile and web apps powered by AWS. Amplify seamlessly provisions and manages your mobile backend and provides a simple framework to easily integrate your backend with your iOS, Android, Web, and React Native frontends. Amplify also automates the application release process of both your frontend and backend allowing you to deliver features faster.

AWS Amplify Console provides a Git-based workflow for deploying and hosting fullstack serverless web applications.

AWS Amplify CLI is a unified toolchain to create, integrate, and manage the AWS cloud services for your app.

Amazon API Gateway is a fully managed service that makes it easy for developers to create, publish, maintain, monitor, and secure REST APIs at any scale.

AWS Fargate is a serverless compute engine for containers that works with both Amazon Elastic Container Service (ECS) and Amazon Elastic Kubernetes Service (EKS).

AWS Lambda lets you run code without provisioning or managing servers. You pay only for the compute time you consume. With Lambda, you can run code for virtually any type of application or backend service.

Amazon Cognito is a user management service with rich support for users authentication and authorization. You can manage those users within Amazon Cognito or from other federated IdPs.

Amazon DynamoDB is a key-value and document database that delivers single-digit millisecond performance at any scale.

https://aws.amazon.com/blogs/mobile/appsync-microservices/