diff --git a/source/plugin/Assets/GoogleMobileAds/Api/Core/AdFormat.cs b/source/plugin/Assets/GoogleMobileAds/Api/Core/AdFormat.cs
new file mode 100644
index 000000000..0507739e0
--- /dev/null
+++ b/source/plugin/Assets/GoogleMobileAds/Api/Core/AdFormat.cs
@@ -0,0 +1,35 @@
+// Copyright (C) 2024 Google, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+namespace GoogleMobileAds.Api
+{
+    /// <summary>
+    /// Format of the ad being requested.
+    /// </summary>
+    public enum AdFormat
+    {
+        /// Banner ad format.
+        BANNER = 0,
+        /// Interstitial ad format.
+        INTERSTITIAL = 1,
+        /// Rewarded ad format.
+        REWARDED = 2,
+        /// Rewarded interstitial ad format.
+        REWARDED_INTERSTITIAL = 3,
+        /// Native ad format.
+        NATIVE = 4,
+        /// App open ad format.
+        APP_OPEN_AD = 5
+    }
+}
diff --git a/source/plugin/Assets/GoogleMobileAds/Api/Core/AdFormat.cs.meta b/source/plugin/Assets/GoogleMobileAds/Api/Core/AdFormat.cs.meta
new file mode 100644
index 000000000..968b6eecd
--- /dev/null
+++ b/source/plugin/Assets/GoogleMobileAds/Api/Core/AdFormat.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 33dae7206ed774fbc81b0c67eef1e1ad
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
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diff --git a/source/plugin/Assets/GoogleMobileAds/Api/Core/PreloadConfiguration.cs b/source/plugin/Assets/GoogleMobileAds/Api/Core/PreloadConfiguration.cs
new file mode 100644
index 000000000..08c8ac70f
--- /dev/null
+++ b/source/plugin/Assets/GoogleMobileAds/Api/Core/PreloadConfiguration.cs
@@ -0,0 +1,49 @@
+// Copyright (C) 2024 Google, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+using System;
+
+namespace GoogleMobileAds.Api
+{
+    /// <summary>
+    /// Configuration for preloading ads.
+    /// </summary>
+    [Serializable]
+    public sealed class PreloadConfiguration
+    {
+        /// <summary>
+        /// The ad unit ID of the ad to preload.
+        /// </summary>
+        public string AdUnitId;
+
+        /// <summary>
+        /// The ad format of the ad to preload.
+        /// </summary>
+        public AdFormat Format;
+
+        /// <summary>
+        /// The ad request to preload.
+        /// </summary>
+        public AdRequest Request;
+
+        public PreloadConfiguration() { }
+
+        public PreloadConfiguration(PreloadConfiguration configuration)
+        {
+            AdUnitId = configuration.AdUnitId;
+            Format = configuration.Format;
+            Request = configuration.Request;
+        }
+    }
+}
diff --git a/source/plugin/Assets/GoogleMobileAds/Api/Core/PreloadConfiguration.cs.meta b/source/plugin/Assets/GoogleMobileAds/Api/Core/PreloadConfiguration.cs.meta
new file mode 100644
index 000000000..4faf2add7
--- /dev/null
+++ b/source/plugin/Assets/GoogleMobileAds/Api/Core/PreloadConfiguration.cs.meta
@@ -0,0 +1,11 @@
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+guid: 117797828564244c286d8e8b0049fed1
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+  serializedVersion: 2
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