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+---
+title: Create a Basic Node.js Application with Express Generator
+description: Create a Node.js application skeleton with Express Generator and add some snippets into the backend as a basic application.
+auto_validation: true
+time: 25
+tags: [ tutorial>beginner, programming-tool>node-js]
+primary_tag: software-product>sap-btp\, kyma-runtime
+---
+
+## Prerequisites
+- You have installed [Node.js](https://nodejs.org/en/download/).
+- You have a Kyma runtime environment on SAP Business Technology Platform (BTP). If not, please follow this tutorial: [Enable SAP BTP, Kyma Runtime](cp-kyma-getting-started).
+
+## Details
+### You will learn
+- How to create a Node.js application skeleton with Node.js Express generator
+- How to develop a particular endpoint to respond to client requests
+
+---
+
+[ACCORDION-BEGIN [Step 1: ](Create Node.js Application Skeleton)]
+
+You can use the application generator tool [Node.js Express generator](https://expressjs.com/en/starter/generator.html) to quickly create a Node.js application skeleton.
+
+Before that, create a new directory for your project:
+```
+mkdir multitenancy-kyma-tutorial
+```
+
+Under the `multitenancy-kyma-tutorial` directory, create your own Node.js Application.
+
+**Option 1**: Run the application generator to create application skeleton with single one `npx` command (available in Node.js 8.2.0):
+```
+npx express-generator --view=jade kyma-multitenant-node
+```
+
+**Option 2**: Run the application generator to create application skeleton with command `npm` and `express`, by this way, packages will be saved locally as well.
+
+Install the tool:
+
+```
+npm install -g express-generator
+```
+
+> Package `express` is installed together.
+
+Verify if you have successfully installed the tool:
+
+```
+express --version
+```
+
+Create an application skeleton:
+
+```
+express --view=jade kyma-multitenant-node
+```
+
+![project-tree](project-tree.png)
+
+The generated app has the following directory structure:
+
+```
+.
+├── app.js
+├── bin
+│   └── www
+├── package.json
+├── public
+│   ├── images
+│   ├── javascripts
+│   └── stylesheets
+│       └── style.css
+├── routes
+│   ├── index.js
+│   └── users.js
+└── views
+    ├── error.jade
+    ├── index.jade
+    └── layout.jade
+
+7 directories, 9 files
+```
+
+[DONE]
+[ACCORDION-END]
+
+
+[ACCORDION-BEGIN [Step 2: ](Add Code Snippets into Node.js Application)]
+
+Routing refers to determining how an application responds to a client request to a particular endpoint, which is a URI (or path) and a specific HTTP request method (GET, POST, and so on).
+
+Each route can have one or more handler functions, which are executed when the route is matched.
+
+Route definition takes the following structure:
+
+```javascript
+app.METHOD(PATH, HANDLER)
+```
+
+Where:
+
+- `app` is an instance of `express`.
+- `METHOD` is an [HTTP request method](https://en.wikipedia.org/wiki/Hypertext_Transfer_Protocol#Request_methods), in lowercase.
+- `PATH` is a path on the server.
+- `HANDLER` is the function executed when the route is matched.
+
+Add basic logic into the default get endpoint with the following code snippets:
+
+```javascript
+/**
+ * This is the default end-point when someone attempts to access the SaaS application.
+ * We show a message to the logged in user.
+ * Format of the message: Hello <logon name>; your tenant subdomain is <consumer sub-domain>; your tenant zone id is <consumer tenant id>
+ * The logon name will be specific to each user.
+ * The tenant zone and sub domain will be the same for all users of one consumer(tenant).
+ * Otherwise, if there is no AuthInfo object found, We show the message "Hello World" to users.
+ */
+router.get("/", function(req, res, next) {
+    try {
+        var line1 = "Hello " + req.authInfo.getLogonName();
+        var line2 = "your tenant sub-domain is " + req.authInfo.getSubdomain();
+        var line3 = "your tenant zone id is " + req.authInfo.getZoneId();
+        var responseMsg = line1 + "; " + line2 + "; " + line3;
+        res.send(responseMsg);
+    } catch (e) {
+        console.log("AuthInfo object undefined.");
+        var responseMsg = "Hello World!";
+        res.send(responseMsg);
+    }
+});
+```
+
+>  For more details on how to develop Express web application, please visit the official website: [Express](https://expressjs.com/)
+
+[VALIDATE_1]
+[ACCORDION-END]
+
+[ACCORDION-BEGIN [Step 3: ](Project Repository)]
+
+
+You can find the final Node.js project from repository: [here](https://github.com/SAP-samples/btp-kyma-runtime-multitenancy-tutorial/tree/main/Mission:%20Develop%20a%20Node.js%20Application%20in%20the%20SAP%20BTP%20Kyma%20Runtime).
+
+
+
+[DONE]
+[ACCORDION-END]
+
+
+---