Connect AWS S3 Bucket to Atlas App Services - Tutorial

To connect an AWS S3 bucket to MongoDB App Services, you can follow these general steps:

  1. Create an AWS S3 bucket and obtain the access and secret keys for a user with appropriate permissions to access the bucket. You can do this by going to the AWS Management Console and navigating to the IAM (Identity and Access Management) service.

  2. In the MongoDB Atlas dashboard, navigate to your project and click “Database Access” in the left-hand sidebar. Create a new database user with the necessary permissions to access your database collections.

  3. Next, navigate to the “Clusters” tab in the left-hand sidebar and click on the cluster that you want to connect to your S3 bucket. In the “Clusters” tab, click on “Connect” and select “Connect your application”.

  4. From the “Choose your driver version” dialog box, select “Node.js” and click “Copy”.

  5. Create a new Node.js project or navigate to an existing Node.js project, and paste the connection string you just copied into your application code.

  6. Next, install the AWS SDK for Node.js by running the following command in your terminal or command prompt:

npm install aws-sdk
  1. Once you have installed the AWS SDK, you can use it to connect to your S3 bucket from your Node.js application code. You can use the aws-sdk library to upload and download files to and from your S3 bucket.

For example, to upload a file to your S3 bucket, you can use the following code:

const AWS = require('aws-sdk');
const fs = require('fs');

const s3 = new AWS.S3({
  accessKeyId: 'YOUR_ACCESS_KEY_ID',
  secretAccessKey: 'YOUR_SECRET_ACCESS_KEY',

const fileContent = fs.readFileSync('PATH_TO_FILE');

const params = {
  Key: 'FILE_NAME',
  Body: fileContent,

s3.upload(params, function(err, data) {
  if (err) {
    throw err;
  console.log(`File uploaded successfully. ${data.Location}`);

Note that you will need to replace YOUR_ACCESS_KEY_ID, YOUR_SECRET_ACCESS_KEY, YOUR_BUCKET_NAME, PATH_TO_FILE, and FILE_NAME with your own values.

Once you have successfully connected your AWS S3 bucket to your MongoDB app services, you can use it to store and retrieve files and other data as needed.