diff --git a/config.yaml b/config.yaml
index 31b7b57..dc763af 100644
--- a/config.yaml
+++ b/config.yaml
@@ -1,5 +1,6 @@
-mode: CLI
+mode: BACKEND
 logging_level: DEBUG
+production_mode: false
 learning_materials: ./learning_assets
 experiment_implementation: ./tests/model
 experiment_results: ./tests/model/results
diff --git a/knowledge_verificator/main.py b/knowledge_verificator/main.py
index 3dc9389..58ae390 100755
--- a/knowledge_verificator/main.py
+++ b/knowledge_verificator/main.py
@@ -1,9 +1,11 @@
 """Main module with CLI definition."""
 
 from pathlib import Path
+import subprocess
 import sys
-from knowledge_verificator.utils.configuration_parser import OperatingMode
+
 from knowledge_verificator.io_handler import config
+from knowledge_verificator.utils.configuration_parser import OperatingMode
 from knowledge_verificator.command_line import run_cli_mode
 from tests.model.runner import ExperimentRunner
 
@@ -19,5 +21,16 @@
             run_cli_mode()
 
         case OperatingMode.BACKEND:
-            pass
-            # TODO: Implement running backend.
+            if config.production_mode:
+                MODE = 'run'
+            else:
+                MODE = 'dev'
+
+            args: list[str] = [
+                'fastapi',
+                MODE,
+                'knowledge_verificator/backend.py',
+            ]
+            process = subprocess.Popen(
+                args=args,
+            )
diff --git a/knowledge_verificator/utils/configuration_parser.py b/knowledge_verificator/utils/configuration_parser.py
index c93164a..57982f7 100644
--- a/knowledge_verificator/utils/configuration_parser.py
+++ b/knowledge_verificator/utils/configuration_parser.py
@@ -52,6 +52,7 @@ class Configuration:
     mode: OperatingMode
     experiment_implementation: Path
     experiment_results: Path
+    production_mode: bool
 
     def __init__(
         self,