Fullstack Python: Using Google Cloud Platform (GCP) for Flask App Deployment

 As fullstack Python developers, choosing the right cloud platform is essential for deploying scalable and reliable applications. One of the top choices in the industry is Google Cloud Platform (GCP). Known for its developer-friendly tools, global infrastructure, and seamless integration with other Google services, GCP offers several options for deploying Python-based applications such as Flask. In this blog, we’ll walk through how to deploy a Flask app on GCP using App Engine, a Platform-as-a-Service (PaaS) that abstracts server management and lets you focus on code.


Why Choose GCP for Flask Deployment?

Google Cloud Platform provides robust infrastructure, security, and easy-to-use deployment options that make it ideal for Flask applications. Here are a few benefits:

Fully Managed Services: No need to manage infrastructure manually.

Automatic Scaling: Apps scale based on traffic.

Integrated Developer Tools: GCP integrates well with GitHub, Firebase, BigQuery, and other services.

Free Tier: GCP offers a generous free tier to get started with basic hosting and databases.


Step-by-Step Guide: Deploying Flask on GCP App Engine

Let’s explore the most straightforward deployment method using GCP App Engine (Standard Environment).

1. Prepare Your Flask App

Here’s a minimal project structure:

bash


/flask-app

├── app.py

├── requirements.txt

└── app.yaml

Sample app.py:


pythonCopy

Edit

from flask import Flask


app = Flask(__name__)


@app.route('/')

def home():

    return "Hello from Flask on GCP!"

requirements.txt:


ini

Copy

Edit

Flask==2.3.3

gunicorn==21.2.0


2. Create app.yaml for App Engine

This file tells GCP how to run your app.


yaml


runtime: python310


entrypoint: gunicorn -b :$PORT app:app


handlers:

- url: /.*

  script: auto


3. Set Up GCP Environment

Create a GCP account and project at https://console.cloud.google.com.

Enable App Engine for your project.

Install and initialize Google Cloud SDK:


bash


gcloud init


4. Deploy the Flask App

Navigate to your project folder and deploy:


bash


gcloud app deploy

When prompted, select the region for deployment (e.g., us-central). GCP will upload your code, install dependencies, and launch your app.


5. Visit Your Live Flask App

Once deployment is complete, access your application via:


cpp

Copy

Edit

https://<your-project-id>.appspot.com

You can also use a custom domain via the App Engine dashboard.


Optional: Add a Frontend

If your fullstack app includes a separate frontend (e.g., built in React), you can:

Host it using Firebase Hosting or GCP Cloud Storage (Static Website).

Proxy frontend requests to your Flask backend.

Use Cloud Build for CI/CD automation between frontend and backend services.


Additional GCP Services You Can Use

Cloud SQL – Managed MySQL/PostgreSQL databases.

Firestore – NoSQL document-based database.

Secret Manager – Secure API key and secret storage.

Cloud Logging & Monitoring – For tracking performance and logs.


Final Thoughts

Google Cloud Platform offers a developer-friendly, scalable environment for deploying fullstack Python applications. By leveraging App Engine, Flask developers can deploy quickly without worrying about infrastructure. Whether you're building a portfolio project or a production-grade web application, GCP provides everything you need—from hosting and databases to monitoring and CI/CD pipelines.


Learn FullStack Python Training

Read More : Flask Deployment on Azure: Setting Up Fullstack Python Applications

Read More : Fullstack Python: Containerizing Flask Apps and Deploying on AWS ECS

Read More : Fullstack Flask: Deploying Flask Apps on AWS EC2

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