Amazon Cognito Sync
If you're new to Amazon Cognito Sync, use AWS AppSync
It enables user data like app preferences or game state to be synchronized. It also extends these capabilities by allowing multiple users to synchronize and collaborate in real time on shared data.
Amazon Cognito Sync is an AWS service and client library that makes it possible to sync application-related user data across devices. Amazon Cognito Sync can synchronize user profile data across mobile devices and the web without using your own backend. The client libraries cache data locally so that your app can read and write data regardless of device connectivity status. When the device is online, you can synchronize data. If you set up push sync, you can notify other devices immediately that an update is available.
For information about Amazon Cognito Identity region availability, see AWS
Service Region Availability
To learn more about Amazon Cognito Sync, see the following topics.