It looks like when I create an AppServicePlan kind is not respected. This is the setup I am currently trying to deploy. You will see the kind is set to linux. Problem is when I look at the resource in Azure this is set to Windows.

new AppServicePlan(`${p}-asp`, {
      kind: "linux",
      location: rg.location,
      resourceGroupName: rg.name,
      sku: {
        capacity: 3,
        family: "Pv3",
        name: "P1v3",
        size: "P1v3",
        tier: "PremiumV3",
      },
    })

I think you do need to set

reserved

to

true

too: https://www.pulumi.com/docs/reference/pkg/azure-native/web/appserviceplan/#reserved_nodejs