diff --git a/Dockerfile b/Dockerfile
index c76c08c..c1cf12a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -23,7 +23,7 @@ EXPOSE 8000
 # up the FastAPI workers.
 # NOTE: If you run this Dockerfile via "docker compose up", CMD will be overridden
 # by docker-compose.yaml
-CMD ["gunicorn", "app.main:sio_app", \
+CMD ["gunicorn", "app.main:main_app", \
      "--bind", "0.0.0.0:8000", \
      "--access-logfile", "-", \
      "--workers", "1", \
diff --git a/app/config.py b/app/config.py
index 5b36fed..37b5984 100644
--- a/app/config.py
+++ b/app/config.py
@@ -14,6 +14,7 @@ class Settings(BaseSettings):
     enable_examples: bool = True
     enable_excel_online: bool = True
     enable_htmx: bool = True
+    enable_socketio: bool = True
     entraid_client_id: Optional[str] = None
     entraid_tenant_id: Optional[str] = None
     # Set to False if you have users from external organizations
diff --git a/app/main.py b/app/main.py
index d6c7a9e..1b26524 100644
--- a/app/main.py
+++ b/app/main.py
@@ -21,11 +21,6 @@
 # App
 app = FastAPI(docs_url=None, redoc_url=None, openapi_url=None)
 
-# Routers
-app.include_router(xlwings_router)
-app.include_router(macros_router)
-app.include_router(taskpane_router)
-
 # CORS: Office Scripts and custom functions in Excel on the web require CORS
 # Using app.add_middleware won't add the CORS headers if you handle the root "Exception"
 # in an exception handler (it would require a specific exception type).
@@ -36,7 +31,17 @@
 )
 
 # Socket.io
-sio_app = socketio.ASGIApp(socketio_router.sio, cors_app)
+if settings.enable_socketio:
+    sio_app = socketio.ASGIApp(socketio_router.sio, cors_app)
+    main_app = sio_app
+else:
+    main_app = cors_app
+
+
+# Routers
+app.include_router(xlwings_router)
+app.include_router(macros_router)
+app.include_router(taskpane_router)
 
 
 # Security headers
diff --git a/app/static/js/socketio-handlers.js b/app/static/js/socketio-handlers.js
index 9833242..33353b4 100644
--- a/app/static/js/socketio-handlers.js
+++ b/app/static/js/socketio-handlers.js
@@ -9,6 +9,6 @@ try {
     },
   });
 } catch (error) {
-  console.error(error);
+  console.log("Didn't load socket.io: ", error);
   globalThis.socket = null;
 }
diff --git a/app/templates/base.html b/app/templates/base.html
index 4895a25..152edf0 100644
--- a/app/templates/base.html
+++ b/app/templates/base.html
@@ -22,7 +22,9 @@
       {% endif %}
       <script src="/static/js/utils/officejs-history-fix-part2.js"></script>
       {# Socket.io (must come before xlwings.js) #}
-      <script src="/static/vendor/socket.io/client-dist/socket.io.min.js"></script>
+      {% if settings.enable_socketio %}
+        <script src="/static/vendor/socket.io/client-dist/socket.io.min.js"></script>
+      {% endif %}
       {# xlwings.js (must come before custom-function-code) #}
       <script src="/static/vendor/xlwings/xlwings.min.js"></script>
       {# Examples #}
diff --git a/docker-compose.prod.yaml b/docker-compose.prod.yaml
index c5ad2b3..0d865fd 100644
--- a/docker-compose.prod.yaml
+++ b/docker-compose.prod.yaml
@@ -3,7 +3,7 @@ services:
   app:
     build: .
     command: >
-        gunicorn app.main:sio_app
+        gunicorn app.main:main_app
         --bind 0.0.0.0:8000
         --access-logfile -
         --workers 1
diff --git a/docker-compose.yaml b/docker-compose.yaml
index c22c066..0f38bec 100644
--- a/docker-compose.yaml
+++ b/docker-compose.yaml
@@ -3,7 +3,7 @@ services:
   app:
     build: .
     command: >
-        uvicorn app.main:sio_app
+        uvicorn app.main:main_app
         --host 0.0.0.0 --port 8000
         --ssl-keyfile /project/certs/localhost+2-key.pem --ssl-certfile /project/certs/localhost+2.pem
         --reload
diff --git a/function_app.py b/function_app.py
new file mode 100644
index 0000000..864fe48
--- /dev/null
+++ b/function_app.py
@@ -0,0 +1,21 @@
+"""
+Azure Functions
+
+Note: Azure Functions don't support streaming functions/socket.io.
+
+The other files required for Azure Functions are:
+- host.json
+- local.settings.json
+
+The function is always called http_app_func, see:
+https://github.com/Azure-Samples/fastapi-on-azure-functions/issues/31
+
+For app logs, in Azure portal go to:
+Function App > My Function App. Than, under `http_app_func`, click on `Invocations and more`.
+"""
+
+import azure.functions as func
+
+from app.main import main_app
+
+app = func.AsgiFunctionApp(app=main_app, http_auth_level=func.AuthLevel.ANONYMOUS)
diff --git a/host.json b/host.json
new file mode 100644
index 0000000..a3a3a7e
--- /dev/null
+++ b/host.json
@@ -0,0 +1,22 @@
+{
+  "version": "2.0",
+  "logging": {
+    "applicationInsights": {
+      "samplingSettings": {
+        "isEnabled": true,
+        "excludedTypes": "Request"
+      }
+    }
+  },
+  "extensionBundle": {
+    "id": "Microsoft.Azure.Functions.ExtensionBundle",
+    "version": "[2.*, 3.0.0)"
+  },
+  "extensions":
+  {
+    "http":
+    {
+        "routePrefix": ""
+    }
+  }
+}
diff --git a/local.settings.json b/local.settings.json
new file mode 100644
index 0000000..fb158d7
--- /dev/null
+++ b/local.settings.json
@@ -0,0 +1,8 @@
+{
+  "IsEncrypted": false,
+  "Values": {
+    "AzureWebJobsStorage": "",
+    "FUNCTIONS_WORKER_RUNTIME": "python",
+    "AzureWebJobsFeatureFlags": "EnableWorkerIndexing"
+  }
+}
diff --git a/requirements.in b/requirements.in
index d00f903..a27b5c5 100644
--- a/requirements.in
+++ b/requirements.in
@@ -1,3 +1,4 @@
+azure-functions; sys_platform != 'win32'
 cachetools
 fastapi
 gunicorn; sys_platform != 'win32'
diff --git a/requirements.txt b/requirements.txt
index 846ed3e..ec33ecb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,6 +7,7 @@ anyio==4.3.0
     #   httpx
     #   starlette
     #   watchfiles
+azure-functions==1.19.0
 bidict==0.23.1
     # via python-socketio
 cachetools==5.3.3
diff --git a/run.py b/run.py
index 2fcb4d6..1654fe5 100644
--- a/run.py
+++ b/run.py
@@ -6,7 +6,7 @@
 
 if __name__ == "__main__":
     uvicorn.run(
-        "app.main:sio_app",
+        "app.main:main_app",
         host="127.0.0.1",
         port=8000,
         reload=True,