diff --git a/ci/run-integration-tests.ps1 b/ci/run-integration-tests.ps1
index ae705f41..99621cbd 100644
--- a/ci/run-integration-tests.ps1
+++ b/ci/run-integration-tests.ps1
@@ -73,67 +73,107 @@ if ($Version) {
     Write-Host "No version given, so the examples were tested by the unit tests against the reactor."
 }
 
-# The shared Selenium contract tests, run against the Device Detection cloud
-# web example.
+# The shared Selenium contract tests, run against one web example. The example
+# is built, started in the background on its own port and left to serve until
+# the tests finish. Every web example, cloud and on-premise, is expected to give
+# the same client-side results, so each is tested the same way.
 function Invoke-ContractTests {
-    $port = 8099
+    param(
+        [Parameter(Mandatory)][string]$Label,
+        [Parameter(Mandatory)][string]$Module,
+        [Parameter(Mandatory)][int]$Port,
+        # Environment variables the example needs, removed again afterwards.
+        [hashtable]$ExampleEnv = @{}
+    )
+    Write-Host "Running the Selenium contract tests against the $Label example on port $Port"
     $example = $null
     Push-Location "$RepoName/examples/device-detection"
     try {
-        mvn @MavenOptions -pl web/getting-started.cloud -am package -DskipTests @versionArgs
-        if ($LASTEXITCODE -ne 0) { throw "Building the cloud web example failed." }
-        $jar = (Get-ChildItem web/getting-started.cloud/target/*-jar-with-dependencies.jar | Select-Object -First 1).FullName
-        $env:PORT = $port
-        $env:TestCloudEndpoint = "https://cloud.51degrees.com/api/v4"
-        $env:TestResourceKey = $TestResourceKey
+        mvn @MavenOptions -pl $Module -am package -DskipTests @versionArgs
+        if ($LASTEXITCODE -ne 0) { throw "Building the $Label web example failed." }
+        $jar = (Get-ChildItem "$Module/target/*-jar-with-dependencies.jar" | Select-Object -First 1).FullName
+        $env:PORT = $Port
+        foreach ($name in $ExampleEnv.Keys) {
+            Set-Item "env:$name" $ExampleEnv[$name]
+        }
         $example = java -jar $jar 2>&1 &
     } finally {
         Pop-Location
     }
 
     try {
-        # SELENIUM_TESTS_REF picks a branch of the suite, so a change there
-        # can be tried here before it is merged.
-        $seleniumRef = if ($env:SELENIUM_TESTS_REF) { $env:SELENIUM_TESTS_REF } else { 'main' }
-        if (-not (Test-Path selenium-api-tests)) {
-            Write-Host "Cloning the Selenium contract tests from '$seleniumRef'"
-            git clone --depth 1 --branch $seleniumRef https://github.com/51Degrees/selenium-api-tests.git
-        }
-
         # Wait for the example to come up.
-        curl -sS -o $(if ($IsWindows) { 'NUL' } else { '/dev/null' }) --retry 20 --retry-delay 3 --retry-max-time 120 --retry-connrefused "http://localhost:$port"
-        if ($LASTEXITCODE -ne 0) { throw "The cloud web example did not start on port $port." }
+        curl -sS -o $(if ($IsWindows) { 'NUL' } else { '/dev/null' }) --retry 20 --retry-delay 3 --retry-max-time 120 --retry-connrefused "http://localhost:$Port"
+        if ($LASTEXITCODE -ne 0) { throw "The $Label web example did not start on port $Port." }
 
-        $env:CLOUD_ROOT_URL = "https://cloud.51degrees.com/"
-        $env:PAID_RESOURCE_KEY = $TestResourceKey
-        $env:EXAMPLE_URL = "http://localhost:$port"
+        $env:EXAMPLE_URL = "http://localhost:$Port"
         $env:EXAMPLE_LANG = 'java'
         dotnet test selenium-api-tests -c Release --filter TestCategory=Contract
         # PowerShell does not stop for a native command that returns non-zero,
         # so without this the browser tests could fail every case and the job
         # would still be reported as a success.
         if ($LASTEXITCODE -ne 0) {
-            throw "The Selenium contract tests failed, returning $LASTEXITCODE. Their output is above."
+            throw "The Selenium contract tests failed against the $Label example, returning $LASTEXITCODE. Their output is above."
         }
     } catch {
-        if ($example) { Write-Host '>>> example app output >>>'; Receive-Job $example | Out-Host; Write-Host '<<< app output <<<' }
+        if ($example) { Write-Host ">>> $Label example output >>>"; Receive-Job $example | Out-Host; Write-Host "<<< $Label example output <<<" }
         throw
     } finally {
         if ($example) { Remove-Job -Force $example }
+        Remove-Item env:PORT, env:EXAMPLE_URL -ErrorAction SilentlyContinue
+        foreach ($name in $ExampleEnv.Keys) {
+            Remove-Item "env:$name" -ErrorAction SilentlyContinue
+        }
     }
 }
 
 Write-Host "::group::Selenium contract tests"
 if (-not $TestResourceKey) {
-    Write-Host "::warning title=Selenium skipped::No resource key, so the Selenium contract tests were not run against the cloud example."
+    Write-Host "::warning title=Selenium skipped::No resource key, so the Selenium contract tests were not run against the web examples."
 } elseif ($IsLinux -and [System.Runtime.InteropServices.RuntimeInformation]::ProcessArchitecture -eq [System.Runtime.InteropServices.Architecture]::Arm64) {
     Write-Host "::warning title=Selenium skipped::Selenium contract skipped on linux-arm64, which has no selenium-manager build. It runs on x64 and macOS arm64."
 } else {
-    try {
-        Invoke-ContractTests
-    } catch {
-        Write-Host "::error title=Selenium contract failed::$_"
-        $failed += 'Selenium contract tests'
+    # Get the shared contract tests. SELENIUM_TESTS_REF picks a branch of the
+    # suite, so a change there can be tried here before it is merged.
+    $seleniumRef = if ($env:SELENIUM_TESTS_REF) { $env:SELENIUM_TESTS_REF } else { 'main' }
+    if (-not (Test-Path selenium-api-tests)) {
+        Write-Host "Cloning the Selenium contract tests from '$seleniumRef'"
+        git clone --depth 1 --branch $seleniumRef https://github.com/51Degrees/selenium-api-tests.git
+    }
+    $env:CLOUD_ROOT_URL = "https://cloud.51degrees.com/"
+    $env:PAID_RESOURCE_KEY = $TestResourceKey
+
+    $contracts = @(
+        @{
+            Label = 'cloud'
+            Module = 'web/getting-started.cloud'
+            Port = 8099
+            ExampleEnv = @{
+                TestCloudEndpoint = "https://cloud.51degrees.com/api/v4"
+                TestResourceKey = $TestResourceKey
+            }
+        }
+        # The on-premise example, against the TAC data file that
+        # fetch-assets.ps1 links into the data repository. The Lite data file
+        # has neither DeviceType nor the JavaScript properties the contract
+        # tests need.
+        @{
+            Label = 'on-premise'
+            Module = 'web/getting-started.onprem'
+            Port = 8098
+            ExampleEnv = @{
+                '51DEGREES_DD_PATH' = (Resolve-Path "$RepoName/cxx/data/device-detection/TAC-HashV41.hash").Path
+            }
+        }
+    )
+    # Each example is tested whether or not the one before it failed.
+    foreach ($contract in $contracts) {
+        try {
+            Invoke-ContractTests @contract
+        } catch {
+            Write-Host "::error title=Selenium contract failed::$_"
+            $failed += "Selenium contract tests, $($contract.Label) example"
+        }
     }
 }
 Write-Host "::endgroup::"