This end-to-end Cloud Assembly tutorial shows how you might deploy in a multiple-cloud setting. You deploy the same cloud template to more than one provider, in this case AWS and Microsoft Azure.
In this example, the application is a WordPress site. Look at the sequential setup to understand the process that brings the entire design to completion.
Remember that the names and values you see are only examples. You won't be able to use them letter-by-letter in your own environment.
To fit your own cloud infrastructure and deployment needs, consider where you would make your own substitutions for the example values.