# How Data Transfer Hub works
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 This Guidance has three components: a web console, the Amazon S3 transfer engine, and the Amazon ECR transfer engine. 

## Web console
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 This Guidance provides a simple web console, which allows you to create and manage transfer tasks for Amazon S3 and Amazon ECR. 

## Amazon S3 transfer engine
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 Amazon S3 transfer engine runs the Amazon S3 plugin and is used for transferring objects from their sources into S3 buckets. The S3 plugin supports the following features: 
+  Transfer Amazon S3 objects between AWS China Regions and AWS Regions 
+  Transfer objects from other cloud providers to Amazon S3 
+  Transfer objects from S3 Compatible Storage service to Amazon S3 
+  Support near real time transfer via S3 Event 
+  Support transfer with object metadata 
+  Support incremental data transfer 
+  Support transfer from private payer request bucket 
+  Auto retry and error handling 

## Amazon ECR transfer engine
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 Amazon ECR engine runs the Amazon ECR plugin and is used for transferring container images from other container registries. The ECR plugin supports the following features: 
+  Transfer Amazon ECR images between AWS China Regions and AWS Regions 
+  Transfer from public container registry (such as Docker Hub, GCR.io, Quay.io) to Amazon ECR 
+  Transfer selected images to Amazon ECR 
+  Transfer all images and tags from Amazon ECR 

 The ECR plugin leverages [skopeo](https://github.com/containers/skopeo) for the underlying engine. The AWS Lambda function lists images in their sources and uses Fargate to run the transfer jobs.