To execute shell scripts that contain both Bash and PowerShell cmdlets without installing any additional software, you would use Azure Cloud Shell. Azure Cloud Shell is a browser-based, authenticated shell environment that provides a built-in option to switch between Bash (which supports Azure CLI) and PowerShell, making it ideal for scenarios requiring both. Azure Cloud Shell is preconfigured to work with Azure services, and it abstracts the complexities of the underlying infrastructure. Azure CLI alone does not support PowerShell cmdlets, and Azure PowerShell alone does not support Bash scripts. Visual Studio Code with the Azure extension, while powerful for development and deployment, primarily serves as an Integrated Development Environment (IDE) rather than a browser-based shell environment.