diff --git a/server-2025-learning-lab/bicep/main.bicep b/server-2025-learning-lab/bicep/main.bicep
index 52145ae..d0f714d 100644
--- a/server-2025-learning-lab/bicep/main.bicep
+++ b/server-2025-learning-lab/bicep/main.bicep
@@ -1,6 +1,3 @@
-// Windows Server 2025 Learning Lab
-// Main deployment file
-
 targetScope = 'subscription'
 
 // Parameters
diff --git a/server-2025-learning-lab/deploy.ps1 b/server-2025-learning-lab/deploy.ps1
index a8f5442..1b4a387 100644
--- a/server-2025-learning-lab/deploy.ps1
+++ b/server-2025-learning-lab/deploy.ps1
@@ -120,6 +120,25 @@ function Save-DeploymentState {
     }
 }
 
+# Function to validate virtual network configuration
+function Validate-VnetConfiguration {
+    param (
+        [string]$VnetAddressSpace,
+        [string]$SubnetAddressPrefix
+    )
+    
+    # Convert address spaces to IPNetwork objects
+    $vnetNetwork = [System.Net.IPNetwork]::Parse($VnetAddressSpace)
+    $subnetNetwork = [System.Net.IPNetwork]::Parse($SubnetAddressPrefix)
+    
+    # Check if subnet is within the VNet address space
+    if (-not [System.Net.IPNetwork]::Contains($vnetNetwork, $subnetNetwork)) {
+        return $false
+    }
+    
+    return $true
+}
+
 # Check if user is logged in to Azure
 $context = Get-AzContext -ErrorAction SilentlyContinue
 if (-not $context) {
@@ -263,6 +282,15 @@ try {
 
 Save-DeploymentState -Stage "Prerequisites" -Completed $true
 
+# Validate virtual network configuration
+$vnetAddressSpace = "10.0.0.0/16"  # Example VNet address space
+$subnetAddressPrefix = "10.0.1.0/24"  # Example subnet address prefix
+
+if (-not (Validate-VnetConfiguration -VnetAddressSpace $vnetAddressSpace -SubnetAddressPrefix $subnetAddressPrefix)) {
+    Write-Host "Error: Subnet address prefix $subnetAddressPrefix is not within the VNet address space $vnetAddressSpace" -ForegroundColor Red
+    exit 1
+}
+
 # Deploy bicep template
 Write-Host "Starting deployment..." -ForegroundColor Cyan
 Save-DeploymentState -Stage "Infrastructure" -Completed $false -Message "Starting infrastructure deployment"
@@ -394,4 +422,4 @@ Write-Host "- ADCS deployment logs are at C:\Logs\ADCS-Setup.log" -ForegroundCol
 Write-Host ""
 Write-Host "Deployment state saved at: $DeploymentStatePath" -ForegroundColor White
 Write-Host ""
-Write-Host "Enjoy your Windows Server 2025 Learning Lab!" -ForegroundColor Green 
\ No newline at end of file
+Write-Host "Enjoy your Windows Server 2025 Learning Lab!" -ForegroundColor Green 
diff --git a/server-2025-learning-lab/tests/bicep_template_tests.ps1 b/server-2025-learning-lab/tests/bicep_template_tests.ps1
new file mode 100644
index 0000000..398eee1
--- /dev/null
+++ b/server-2025-learning-lab/tests/bicep_template_tests.ps1
@@ -0,0 +1,38 @@
+# Bicep Template Unit Tests
+
+# Load the required modules
+Import-Module Az.Resources
+
+# Define the path to the Bicep template
+$templatePath = "server-2025-learning-lab/bicep/main.bicep"
+
+# Function to validate the Bicep template
+function Test-BicepTemplate {
+    param (
+        [string]$TemplatePath
+    )
+
+    # Compile the Bicep template
+    $compiledTemplate = az bicep build --file $TemplatePath --outFile "$TemplatePath.json"
+
+    # Load the compiled template
+    $template = Get-Content -Path "$TemplatePath.json" -Raw | ConvertFrom-Json
+
+    # Validate the subnet address prefix
+    $vnetAddressSpace = $template.resources | Where-Object { $_.type -eq 'Microsoft.Network/virtualNetworks' } | Select-Object -ExpandProperty properties | Select-Object -ExpandProperty addressSpace | Select-Object -ExpandProperty addressPrefixes
+    $subnetAddressPrefix = $template.resources | Where-Object { $_.type -eq 'Microsoft.Network/virtualNetworks/subnets' } | Select-Object -ExpandProperty properties | Select-Object -ExpandProperty addressPrefix
+
+    if ($subnetAddressPrefix -notin $vnetAddressSpace) {
+        throw "Subnet address prefix $subnetAddressPrefix is not within the VNet address space $vnetAddressSpace"
+    }
+
+    Write-Output "Bicep template validation passed."
+}
+
+# Run the test
+try {
+    Test-BicepTemplate -TemplatePath $templatePath
+    Write-Output "Bicep template unit test passed."
+} catch {
+    Write-Error "Bicep template unit test failed: $_"
+}