Choosing between IaaS, PaaS, or SaaS for my first web app deployment

Question

I'm a developer building my first serious web app. It's a Node.js API with a React frontend and a PostgreSQL database. I'm finally ready to move it out of localhost, but I'm getting overwhelmed by all the cloud options (AWS, Azure, GCP) and their different service models. I've been reading docs, but they all seem to assume you already know whether you need raw infrastructure or a managed platform. I've only ever used shared hosting for basic WordPress sites before. For an app like mine, where should I even begin? Should I just rent a VPS (IaaS), use something like Heroku (PaaS), or are there specific managed services (SaaS) I should glue together? I want to focus on development, not server management, but I also don't want to be overly constrained or pay a huge premium.

admin · Accepted Answer

Start with a PaaS (Platform as a Service) like Heroku, Railway, or Render for your first deployment. PaaS abstracts away servers, operating systems, and runtime management, letting you focus on code while providing built-in scaling and databases. This is ideal for a developer prioritizing development over infrastructure, as it eliminates the need for VPS (IaaS) configuration tasks like securing SSH, setting up firewalls, or installing Node.js and PostgreSQL. While SaaS (like managed databases) can be components, a full PaaS handles the entire application lifecycle. You avoid the huge premium of overly complex IaaS setups but gain more flexibility than traditional shared hosting. The core concept is trading low-level control for developer velocity and operational simplicity.

For example, deploying to Heroku typically involves linking your Git repository and using a few commands:

heroku create my-app-name

heroku addons:create heroku-postgresql:hobby-dev

git push heroku main

You'll need a `Procfile` to declare your web process:

web: node server.js

And ensure your `package.json` specifies the Node.js version. This workflow encapsulates the PaaS value: defining what runs, not how it runs.

For example, deploying to Heroku typically involves linking your Git repository and using a few commands:
heroku create my-app-name
heroku addons:create heroku-postgresql:hobby-dev
git push heroku main
You'll need a `Procfile` to declare your web process:
web: node server.js
And ensure your `package.json` specifies the Node.js version. This workflow encapsulates the PaaS value: defining what runs, not how it runs.

Choosing between IaaS, PaaS, or SaaS for my first web app deployment

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