Which script is used to install the Azure Migrate appliance?

The script used to install the Azure Migrate appliance is the AzureMigrateInstaller.ps1. This PowerShell script is specifically designed for the installation process, allowing for greater flexibility and control during the deployment of the Azure Migrate appliance.

PowerShell scripts are particularly well-suited for tasks like this because they can incorporate advanced functions such as error handling, logging, and the ability to interact with other Azure services and tools during the installation process. Therefore, using a PowerShell script for this task ensures that the installation is robust and can be customized as necessary depending on the environment and requirements.

The other options, while they may seem plausible, do not represent the specific script intended for the Azure Migrate installation.