diff --git a/app/logging.py b/app/logging.py
new file mode 100644
index 0000000..281109b
--- /dev/null
+++ b/app/logging.py
@@ -0,0 +1,25 @@
+import json
+import logging
+from datetime import UTC, datetime
+from typing import Any
+
+
+class JsonFormatter(logging.Formatter):
+    def format(self, record: logging.LogRecord) -> str:
+        payload: dict[str, Any] = {
+            "timestamp": datetime.now(UTC).isoformat(),
+            "level": record.levelname,
+            "message": record.getMessage(),
+        }
+        event_data = getattr(record, "event_data", None)
+        if isinstance(event_data, dict):
+            payload.update(event_data)
+        return json.dumps(payload, default=str, separators=(",", ":"))
+
+
+def configure_logging(level: str) -> None:
+    handler = logging.StreamHandler()
+    handler.setFormatter(JsonFormatter())
+    root = logging.getLogger()
+    root.handlers = [handler]
+    root.setLevel(level.upper())