Deploying your Flask application on Amazon Web Services (AWS) is a crucial step to make your app accessible to the world. In this guide, we'll walk you through the process of deploying a Flask app on AWS, including setting up an EC2 instance, configuring security groups, and deploying your application.

Step 1: Create an AWS Account

If you don't already have an AWS account, you'll need to create one. Follow the steps on the AWS website to sign up for an account and set up your billing information.

Step 2: Launch an EC2 Instance

Amazon Elastic Compute Cloud (EC2) instances are virtual servers where you can host your Flask application. Here's how to launch an EC2 instance:

  1. Log in to your AWS Management Console.
  2. Click on "Services" and select "EC2."
  3. Click the "Launch Instance" button to choose an Amazon Machine Image (AMI) and configure your instance.
  4. Follow the wizard to configure your instance details, add storage, and set up security groups.
  5. Review and launch your instance.

Step 3: Connect to Your EC2 Instance

After launching your instance, you'll need to connect to it. Use SSH to access your instance's command line. Here's how to connect using SSH:

ssh -i "your-key.pem" ec2-user@your-instance-ip

Step 4: Update and Install Dependencies

Once connected to your instance, update the package list and install the required software and dependencies for your Flask application. Use `yum` or `apt-get` to install packages.

sudo yum update -y
sudo yum install python3
sudo pip3 install flask gunicorn

Step 5: Deploy Your Flask Application

Upload your Flask application code to your EC2 instance. You can use SCP or SFTP to transfer files. Once the code is on the instance, run your application using Gunicorn or another WSGI server.

gunicorn -b your_app:app

Step 6: Configure Security Groups and Ports

Open the necessary ports in your security group to allow traffic to your Flask application. Typically, you'll open port 80 for HTTP traffic and port 22 for SSH access.

Step 7: Domain Name Configuration

If you want to use a custom domain, configure DNS settings to point to your EC2 instance's public IP address.


Deploying your Flask application on AWS allows you to make it accessible on the internet. By following these steps, you can set up an EC2 instance, configure security groups, and deploy your application. AWS provides a scalable and reliable platform for hosting web applications.