diff --git a/Jupyter/API-tests/News/utils/NewsServiceInterface.py b/Jupyter/API-tests/News/utils/NewsServiceInterface.py
index a69318b..49f2af7 100644
--- a/Jupyter/API-tests/News/utils/NewsServiceInterface.py
+++ b/Jupyter/API-tests/News/utils/NewsServiceInterface.py
@@ -1,6 +1,6 @@
 from abc import ABC
 
-from models.News import News
+from News.models.News import News
 
 
 class NewsServiceInterface(ABC):
diff --git a/Jupyter/API-tests/News/utils/mongodb/mongo.py b/Jupyter/API-tests/News/utils/mongodb/mongo.py
index da55557..77cdc7d 100644
--- a/Jupyter/API-tests/News/utils/mongodb/mongo.py
+++ b/Jupyter/API-tests/News/utils/mongodb/mongo.py
@@ -1,6 +1,6 @@
 import pymongo
-from models.News import News
-from utils.NewsServiceInterface import NewsServiceInterface
+from News.models.News import News
+from News.utils.NewsServiceInterface import NewsServiceInterface
 
 
 class MongoConnector:
@@ -8,7 +8,7 @@ class MongoConnector:
         self,
         hostname,
         database: str,
-        port: int = 27017,
+        port: int | None,
         username: str | None = None,
         password: str | None = None,
     ):
@@ -20,10 +20,13 @@ class MongoConnector:
 
     def connect(self, hostname, port, username, password) -> pymongo.MongoClient:
         if username is not None and password is not None:
-            connection_string = f"mongodb://{username}:{password}@{hostname}:{port}"
+            connection_string = f"mongodb+srv://{username}:{password}@{hostname}"
         else:
-            connection_string = f"mongodb://{hostname}:{port}"
-
+            connection_string = f"mongodb+srv://{hostname}"
+        if port is not None:
+            connection_string += f":{port}"
+            connection_string = connection_string.replace("mongodb+srv", "mongodb")
+        print(connection_string)
         return pymongo.MongoClient(connection_string)
 
 
diff --git a/Jupyter/API-tests/Unternehmensregister/models/Company.py b/Jupyter/API-tests/Unternehmensregister/models/Company.py
index dbddee3..ae1a6f0 100644
--- a/Jupyter/API-tests/Unternehmensregister/models/Company.py
+++ b/Jupyter/API-tests/Unternehmensregister/models/Company.py
@@ -1,5 +1,5 @@
 from abc import ABC
-from dataclasses import dataclass
+from dataclasses import asdict, dataclass
 from enum import Enum
 
 
@@ -35,3 +35,6 @@ class Company:
     name: str
     last_update: str
     relationships: list[CompanyRelationship]
+
+    def dict(self):
+        return asdict(self)
diff --git a/Jupyter/API-tests/Unternehmensregister/notebook.ipynb b/Jupyter/API-tests/Unternehmensregister/notebook.ipynb
index 950c0f7..f0eb465 100644
--- a/Jupyter/API-tests/Unternehmensregister/notebook.ipynb
+++ b/Jupyter/API-tests/Unternehmensregister/notebook.ipynb
@@ -4199,6 +4199,102 @@
     "        ) as export_file:\n",
     "            json.dump(dataclasses.asdict(company), export_file, ensure_ascii=False)"
    ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "import os\n",
+    "import sys\n",
+    "\n",
+    "module_path = os.path.abspath(os.path.join(\"..\"))\n",
+    "if module_path not in sys.path:\n",
+    "    sys.path.append(module_path)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 6,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "mongodb://root:pR0R0v2e2@trisnol.tech:27017\n"
+     ]
+    }
+   ],
+   "source": [
+    "from News.utils.mongodb.mongo import MongoConnector\n",
+    "from Unternehmensregister.utils.CompanyMongoService import CompanyMongoService\n",
+    "\n",
+    "connector = MongoConnector(\n",
+    "    hostname=\"trisnol.tech\",\n",
+    "    database=\"transparenzregister\",\n",
+    "    username=\"root\",\n",
+    "    password=\"pR0R0v2e2\",\n",
+    "    port=27017,\n",
+    ")\n",
+    "\n",
+    "service = CompanyMongoService(connector)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 15,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stderr",
+     "output_type": "stream",
+     "text": [
+      "  0%|          | 0/3147 [00:00<?, ?it/s]"
+     ]
+    },
+    {
+     "name": "stderr",
+     "output_type": "stream",
+     "text": [
+      "100%|██████████| 3147/3147 [00:30<00:00, 102.30it/s]"
+     ]
+    },
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Inserted documents: 0\n"
+     ]
+    },
+    {
+     "name": "stderr",
+     "output_type": "stream",
+     "text": [
+      "\n"
+     ]
+    }
+   ],
+   "source": [
+    "from tqdm import tqdm\n",
+    "import glob\n",
+    "import json\n",
+    "from Unternehmensregister.models.Company import Company\n",
+    "\n",
+    "num_inserted = 0\n",
+    "for file in tqdm(glob.glob1(\"./data/Unternehmensregister/transformed\", \"*.json\")):\n",
+    "    path = os.path.join(\"./data/Unternehmensregister/transformed\", file)\n",
+    "    with open(path, \"r\", encoding=\"utf-8\") as file_object:\n",
+    "        data = json.loads(file_object.read())\n",
+    "        company: Company = Company(**data)\n",
+    "\n",
+    "        company_db = service.get_by_id(company.id)\n",
+    "        if company_db is None:\n",
+    "            service.insert(company)\n",
+    "            num_inserted += 1\n",
+    "print(f\"Inserted documents: {num_inserted}\")"
+   ]
   }
  ],
  "metadata": {
diff --git a/Jupyter/API-tests/Unternehmensregister/utils/CompanyMongoService.py b/Jupyter/API-tests/Unternehmensregister/utils/CompanyMongoService.py
new file mode 100644
index 0000000..46e3aae
--- /dev/null
+++ b/Jupyter/API-tests/Unternehmensregister/utils/CompanyMongoService.py
@@ -0,0 +1,21 @@
+from News.utils.mongodb.mongo import MongoConnector
+from Unternehmensregister.models.Company import Company
+from Unternehmensregister.utils.CompanyServiceInterface import CompanyServiceInterface
+
+
+class CompanyMongoService(CompanyServiceInterface):
+    def __init__(self, connector: MongoConnector):
+        self.collection = connector.database["companies"]
+
+    def get_all(self) -> list[Company]:
+        result = self.collection.find()
+        return list(result)
+
+    def get_by_id(self, id: str) -> Company | None:
+        result = list(self.collection.find({"id": id}))
+        if len(result) == 1:
+            return result[0]
+        return None
+
+    def insert(self, company: Company):
+        return self.collection.insert_one(company.dict())
diff --git a/Jupyter/API-tests/Unternehmensregister/utils/CompanyServiceInterface.py b/Jupyter/API-tests/Unternehmensregister/utils/CompanyServiceInterface.py
new file mode 100644
index 0000000..467560d
--- /dev/null
+++ b/Jupyter/API-tests/Unternehmensregister/utils/CompanyServiceInterface.py
@@ -0,0 +1,14 @@
+from abc import ABC
+
+from models import Company
+
+
+class CompanyServiceInterface(ABC):
+    def get_all(self) -> list[Company.Company]:
+        raise NotImplementedError()
+
+    def get_by_id(self, id: Company.CompayID) -> Company.Company | None:
+        raise NotImplementedError()
+
+    def insert(self, company: Company.Company):
+        raise NotImplementedError()