Defender for Servers is set to On (Standard pricing tier)

# Enable Defender for Servers (Standard) on the subscription
resource "azurerm_security_center_subscription_pricing" "<example_resource_name>" {
  resource_type = "VirtualMachines"
  tier          = "Standard" # Critical: sets Defender for Servers to ON (Standard)
}

// Enable Defender for Servers (Standard) at subscription scope
@description('Enable Microsoft Defender for Servers (Standard)')
targetScope = 'subscription'

resource <example_resource_name> 'Microsoft.Security/pricings@2024-01-01' = {
  name: 'VirtualMachines'
  properties: {
    pricingTier: 'Standard' // Critical: sets Defender for Servers to ON (Standard)
  }
}