diff --git a/google/cloud/aiplatform/explain/metadata/__init__.py b/google/cloud/aiplatform/explain/metadata/__init__.py
new file mode 100644
index 0000000000..0e973c9a40
--- /dev/null
+++ b/google/cloud/aiplatform/explain/metadata/__init__.py
@@ -0,0 +1,15 @@
+# -*- coding: utf-8 -*-
+
+# Copyright 2021 Google LLC
+#
+# 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.
diff --git a/google/cloud/aiplatform/explain/metadata/metadata_builder.py b/google/cloud/aiplatform/explain/metadata/metadata_builder.py
new file mode 100644
index 0000000000..c4bf94e65d
--- /dev/null
+++ b/google/cloud/aiplatform/explain/metadata/metadata_builder.py
@@ -0,0 +1,34 @@
+# -*- coding: utf-8 -*-
+
+# Copyright 2021 Google LLC
+#
+# 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.
+
+
+"""Base abstract class for metadata builders."""
+
+import abc
+
+_ABC = abc.ABCMeta("ABC", (object,), {"__slots__": ()})
+
+
+class MetadataBuilder(_ABC):
+    """Abstract base class for metadata builders."""
+
+    @abc.abstractmethod
+    def save_model_with_metadata(self, filepath: str):
+        """Saves the model with metadata."""
+
+    @abc.abstractmethod
+    def get_metadata(self):
+        """Returns the current metadata as a dictionary."""
diff --git a/google/cloud/aiplatform/explain/metadata/tf/__init__.py b/google/cloud/aiplatform/explain/metadata/tf/__init__.py
new file mode 100644
index 0000000000..0e973c9a40
--- /dev/null
+++ b/google/cloud/aiplatform/explain/metadata/tf/__init__.py
@@ -0,0 +1,15 @@
+# -*- coding: utf-8 -*-
+
+# Copyright 2021 Google LLC
+#
+# 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.