# Re-architecting as a Linux container
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By porting your .NET Framework applications to .NET Core or .NET 6, you can run your applications on multiple platforms, reduce your license costs, increase performance, and improve scalability.

## Use cases
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This migration strategy is useful in any of the following scenarios:
+ You have the resources and time available to refactor your application.
+ You’re able to resolve all .NET Framework dependencies.
+ You have a long-running application.

## Advantages
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This migration approach provides the following benefits, when compared with on-premises .NET applications:
+ Lower total cost of ownership (TCO)
+ Improved security and performance
+ Accelerated innovation
+ Benefits of converting to cloud-native applications
+ Open-source

## Disadvantages
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+ Effort and cost of refactoring

## AWS services
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For storing container images:
+ [Amazon ECR](https://aws.amazon.com/ecr)

For orchestrating containers:
+ [Amazon ECS](https://aws.amazon.com/ecs), or Amazon ECS with [AWS Fargate](https://aws.amazon.com/fargate/)
+ [Amazon EKS](https://aws.amazon.com/eks), or Amazon EKS with [Fargate](https://aws.amazon.com/fargate/)

AWS Fargate is a serverless, pay-as-you-go compute engine that lets you focus on building applications without managing servers. Fargate is compatible with both Amazon ECS and Amazon EKS.

## Tools
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****  

| **Tool** | **Purpose** | **Resource** | 
| --- | --- | --- | 
| Porting Assistant for .NET | This analysis tool scans .NET Framework applications and generates a .NET Core compatibility assessment. The assessment helps you port your applications to Linux faster. | [\[See the AWS documentation website for more details\]](http://docs.aws.amazon.com/prescriptive-guidance/latest/modernization-net-applications/refactor-linux.html) | 
| AWS App2Container (A2C) | A2C is a command line tool for modernizing .NET and Java applications by converting them into containerized applications with minimal effort. | [\[See the AWS documentation website for more details\]](http://docs.aws.amazon.com/prescriptive-guidance/latest/modernization-net-applications/refactor-linux.html) | 

## Deployment decisions
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You can choose from five deployment options:
+ If you want complete control over the configuration of your compute environment, including memory and storage settings, and control over operating system patches: deploy your application as a Linux container on an EC2 instance.
+ If you want the container to be managed by Kubernetes and run as a serverless container: deploy your application as a Linux container on Amazon EKS with Fargate.
+ If you want the container to be managed by Amazon ECS and run as a serverless container: deploy your application as a Linux container on Amazon ECS with Fargate.
+ If you want the container to be managed by Kubernetes, but you want to manage the compute resources of the container yourself: deploy your application as a Linux container on Amazon EKS.
+ If you want the container to be managed by Amazon ECS, but you want to manage the compute resources of the container yourself: deploy your application as a Linux container on Amazon ECS.

 ![\[Refactoring .NET applications as Linux containers on AWS\]](http://docs.aws.amazon.com/prescriptive-guidance/latest/modernization-net-applications/images/rearchitect-linux.png)