While creating webapps using Az cli in Azure, the command line have no option to mention the location parameter. However while creating from azure portal,there is a option where in we can select the region .
Following is the link to the command and the command itsel https://learn.microsoft.com/en-us/cli/azure/webapp?view=azure-cli-latest
az webapp create --name
--plan
--resource-group
[--assign-identity]
[--deployment-container-image-name]
[--deployment-local-git]
[--deployment-source-branch]
[--deployment-source-url]
[--docker-registry-server-password]
[--docker-registry-server-user]
[--https-only {false, true}]
[--multicontainer-config-file]
[--multicontainer-config-type {COMPOSE, KUBE}]
[--role]
[--runtime]
[--scope]
[--startup-file]
[--subnet]
[--tags]
[--vnet]
Az webapp create. Try usingNew-AzwebappPowerShell cmdlet if you want to specify the location while creating the webapp.