Deploying a MEAN Stack App to the Cloud (e.g., Heroku, AWS, Vercel)

Deploying a MEAN Stack App to the Cloud (e.g., Heroku, AWS, Vercel)

Deploying a MEAN Stack (MongoDB, Express.js, Angular, Node.js) application to the cloud involves several steps, depending on the provider. Here's a high-level guide for deploying to Heroku, AWS (EC2), and Vercel, with notes on which parts of the stack are best hosted where.


✅ PREPARE YOUR MEAN STACK APP

Structure your app (commonly):


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/client       (Angular frontend)

/server       (Node.js + Express backend)

/package.json (may be at root or in /server)

Build the Angular app:


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cd client

ng build --prod

This generates static files in client/dist/, which your Express app can serve.


Serve Angular from Express (Optional):

In server.js or app.js, add:


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app.use(express.static(path.join(__dirname, 'client/dist')));


app.get('*', (req, res) => {

  res.sendFile(path.join(__dirname, 'client/dist/index.html'));

});

🌐 DEPLOYING TO HEROKU

Install Heroku CLI: https://devcenter.heroku.com/articles/heroku-cli


Login & create a Heroku app:


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heroku login

heroku create your-app-name

Add a Procfile in the root:


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web: node server/server.js

Set MongoDB using MongoDB Atlas (hosted cloud DB):


Create a cluster at https://www.mongodb.com/cloud/atlas


Add the connection string to Heroku config:


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heroku config:set MONGO_URI=your_mongodb_connection_string

Push to Heroku:


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git add .

git commit -m "Deploy"

git push heroku main

Visit your app:


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heroku open

☁️ DEPLOYING TO AWS EC2

Launch an EC2 instance (Ubuntu recommended).


SSH into it:


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ssh -i "your-key.pem" ubuntu@your-ec2-ip

Install dependencies:


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sudo apt update

sudo apt install nodejs npm git

Clone your app:


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git clone https://github.com/your/repo.git

cd repo

Install and build:


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cd client

npm install

ng build --prod

cd ../server

npm install

Run server:


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node server.js

Set up PM2 and reverse proxy:


Install PM2: npm install -g pm2


Start your app with: pm2 start server.js


Set up Nginx to forward traffic from port 80 to your app's port (e.g., 3000).


Don't forget: Open security group for HTTP and custom app ports.


⚡ DEPLOYING TO VERCEL (Frontend Only)

Vercel is frontend-focused, so it's best used to deploy only the Angular app. Use Heroku/AWS for the backend.


Install Vercel CLI:


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npm i -g vercel

From the client directory:


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cd client

vercel

It’ll prompt you through project setup.


Set backend URL in Angular:


Use environment variables (e.g., environment.prod.ts) to point to your API hosted elsewhere (Heroku, AWS).


🧠 Summary

Stack Part Heroku AWS EC2 Vercel

Angular Served via Express Nginx/Express ✅ Best Option

Node/Express ✅ Best Option ✅ Flexible 🚫 Not Supported

MongoDB Use MongoDB Atlas Use MongoDB Atlas or install on EC2 Use Atlas

Learn MEAN Stack Course

Read More

Optimizing Performance in Large MEAN Applications

Using Mongoose for Data Modeling in MongoDB MEAN

Visit Our Quality Thought Training in Hyderabad

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