@sns Thanks for reaching out to Microsoft Q&A, apologize for any inconvenience caused on this.
In the first image, you are passing the values of declared Parameters in deploy.json
file using the parameters.deploy.json
and these values will be taken into consideration while deploying/creating the infrastructure resources.
If you are passing the Parameter values in the deploy.json
using the default value that means that this value will take as parameter value if it is not provided during the deployment.
You can refer to this documentation to know more information about Default values and its usage in ARM template.
Feel free to reach back to me if you have any further questions on this.