Decision matrix

The following table summarizes the migration and modernization options for legacy .NET applications, based on your use case and resources.

Use case	Migration strategy and architecture
	Rehost	Replatform as a Windows container	Re-architect as a Linux container	Re-architect as microservices in Linux containers	Re-architect as microservices without containers
You have resources for refactoring.	No	No	Yes	Yes	Yes
Your .NET legacy application is in constant use.	Yes	Yes	Yes	Yes	No
You can resolve .NET Framework dependencies.	No	No	Yes	Yes	Yes
You can remove Windows dependencies.	No	No	Yes	Yes	Yes
You want to run your application as a native Windows application on an Amazon Elastic Compute Cloud (Amazon EC2) instance.	Yes	No	No	No	No
Your code can be ported from .NET Framework to .NET Core or .NET 6.	No	No	Yes	Yes	Yes
You want to split your monolithic application.	No	No	No	Yes	Yes

The following sections describe these options in detail:

• Rehosting

• Replatforming as a Windows container

• Replatforming as a Linux container

• Re-architecting as microservices in Linux containers

• Re-architecting as microservices without containers