Decision matrix - AWS Prescriptive Guidance

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 5.

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: