Whether you’re working on a hobby project or a professional endeavor, deployment is essential. FastAPI, a high-performance web framework for building APIs with Python, offers an efficient way to handle concurrent tasks using asynchronous programming. In this guide, we’ll explore deploying a FastAPI application on Vercel, which provides a straightforward interface for continuous deployment, and the best part—it’s free!

• Create a new project directory (e.g., flask-api-example).
• Set up a virtual environment (optional but recommended).
• Install Python dependencies specified in the requirements.txt file.

• Create an index.py file within a directory (e.g., api).
• Define your FastAPI routes and endpoints (e.g., a simple “Hello World” response).

• Initialize a Git repository.
• Add a .gitignore file to exclude specific files and directories (e.g., IDE-related files, cache, and virtual environments).

• Add a vercel.json file at the root of your app.
• Specify the build process and routes for Vercel deployment.

• Using Vercel CLI:
  • Install Vercel CLI globally (npm i -g vercel).
  • Log in to the CLI using vercel login.
• Deploy using vercel commands.
  • Using GitHub/GitLab Integration:
  • Connect your Vercel account to your Git repository.
  • Automatically deploy on every push to the repository.

By following these steps, you can deploy your Python FastAPI application on Vercel without any cost. Enjoy hassle-free deployment and focus on building great APIs! 🚀.