PaaS
Platform as a Service
ELI5 — The Vibe Check
PaaS is when someone else handles the boring server stuff (OS, security patches, networking) and you just throw your code at it. Think of it like renting a fully furnished apartment instead of building a house — you just bring your stuff and move in. Heroku, Railway, and Render are PaaS.
Real Talk
Platform as a Service is a cloud delivery model where the provider manages the underlying infrastructure (OS, runtime, middleware, networking) while developers focus on application code. PaaS abstracts server management, enabling faster deployment cycles at the cost of less infrastructure control.
When You'll Hear This
"We chose a PaaS so we don't have to manage servers." / "PaaS is more expensive than IaaS but saves engineering time."
Related Terms
Cloud Computing
Cloud computing means using computers that live in someone else's giant warehouse instead of your own machine.
FaaS (Function as a Service)
FaaS is when you write a tiny function and deploy it to the cloud, and it only runs (and charges you) when someone calls it.
Heroku
Heroku was the OG platform that made deploying apps easy before Vercel existed.
IaaS (Infrastructure as a Service)
IaaS is when you rent the raw computer hardware in someone else's data center.
Railway
Railway is the platform that says 'just connect your GitHub repo and we'll figure everything else out.
Render
Render is another developer-friendly hosting platform that does web services, databases, cron jobs, and static sites all in one place.