How do you deploy a Flask/Django app on Heroku or AWS?

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Deploying a Flask or Django app on Heroku or AWS involves preparing your app, configuring the environment, and pushing it to the platform. Here's a high-level overview for both

Deploying on Heroku:

🔧 For Flask/Django:

1. Create Required Files:

   • Procfile: Defines how to run the app.

     • Flask: web: gunicorn app:app

     • Django: web: gunicorn project_name.wsgi

   • requirements.txt: List of Python dependencies.

   • runtime.txt (optional): Specify Python version.

2. Use Gunicorn (WSGI server):

   • Add gunicorn to requirements.txt.

3. Set up a Git repo:

4. Deploy to Heroku:

5. For Django: Set environment variables (e.g., SECRET_KEY, DEBUG, ALLOWED_HOSTS) and run migrations:

Deploying on AWS (EC2):

1. Set Up an EC2 Instance:

   • Choose an OS (Ubuntu recommended), configure security groups (open port 80/443), and SSH into the instance.

2. Install Dependencies:

   • Python, pip, virtualenv, and your app’s dependencies.

3. Set Up the App:

   • Clone your repo or SCP files.

   • Create a virtual environment and install requirements.

4. Use Gunicorn + Nginx:

   • Gunicorn runs the app, Nginx handles reverse proxy and static files.

5. Configure Systemd for Gunicorn to start on boot.

6. Map domain and SSL (optional) via Nginx or AWS Certificate Manager.

Heroku is simpler and ideal for small apps or MVPs; AWS offers more control and scalability for complex apps.

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