# Rehosting
Rehosting (lift and shift) is the process of migrating your on-premises application to the cloud without modifying it. This strategy is used mostly to migrate large-scale applications to satisfy specific business goals, such as launching a product in an accelerated timeline or leaving an on-premises data center. The applications are rehosted on Amazon Elastic Compute Cloud (Amazon EC2) Windows instances that meet the requirements of the applications you migrate.
## Use cases
This migration strategy is useful in any of the following scenarios:
+ The legacy .NET application must run as a native Windows application.
+ Time and resources to modernize the application are not available.
+ The legacy .NET application is a commercial off-the-shelf (COTS) application.
## Advantages
Rehosting provides the following benefits, when compared with on-premises .NET applications:
+ Minimum effort, because it requires no code or architectural changes
+ Reduced cost
+ Better compliance and security, because it uses the AWS infrastructure and security best practices
## Disadvantages
+ Doesn’t take full advantage of the performance, scalability, and resiliency options of the AWS Cloud
+ Difficult to integrate with state-of-the-art cloud services
## AWS services
+ [Amazon EC2](https://aws.amazon.com/ec2)
+ [AWS Elastic Beanstalk](https://aws.amazon.com/elasticbeanstalk)
+ [AWS Application Migration Service](https://aws.amazon.com/application-migration-service)
## Tools
****
| **Tool** | **Purpose** | **Resource** |
| --- | --- | --- |
| Windows Web Application Migration Assistant | This tool is an interactive PowerShell script that migrates entire websites and their configurations to Elastic Beanstalk. | [Migrating ASP.NET applications to Elastic Beanstalk](https://aws.amazon.com/blogs/devops/migrating-asp-net-applications-to-elastic-beanstalk-with-windows-web-application-migration-assistant/) (AWS blog post) |
## Deployment decisions
You can choose from two 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: migrate your .NET application to Amazon EC2.
+ If you don’t require full control over the infrastructure: use Elastic Beanstalk. Elastic Beanstalk automatically sets up a managed environment for your application.
