diff --git a/allms/domain/configuration.py b/allms/domain/configuration.py
index b2ccf42..55ab712 100644
--- a/allms/domain/configuration.py
+++ b/allms/domain/configuration.py
@@ -12,7 +12,8 @@ class AzureOpenAIConfiguration:
     deployment: str
     model_name: str
     api_version: str
-    api_key: str
+    api_key: Optional[str] = None
+    azure_ad_token: Optional[str] = None
 
 
 @dataclass
diff --git a/allms/models/azure_openai.py b/allms/models/azure_openai.py
index 2007b02..645fb41 100644
--- a/allms/models/azure_openai.py
+++ b/allms/models/azure_openai.py
@@ -40,6 +40,7 @@ def _create_llm(self) -> AzureChatOpenAI:
             model_name=self._config.model_name,
             base_url=self._config.base_url,
             api_key=self._config.api_key,
+            azure_ad_token=self._config.azure_ad_token,
             temperature=self._temperature,
             max_tokens=self._max_output_tokens,
             request_timeout=self._request_timeout_s