How do I choose between containers (Docker/Kubernetes) and a simple VPS/PaaS?

Start with the simplest option that gets the app deployed reliably: a PaaS or a plain VPS for most early-stage products. Kubernetes solves coordination problems, like managing dozens of services across many machines, that a small team usually doesn't have yet.

When does a PaaS or VPS make sense?

A PaaS like Render, Fly.io, or Railway handles builds, deployment, and scaling through a much smaller surface area than Kubernetes, which suits a team that wants to ship features instead of managing infrastructure. A plain VPS gives more manual control at a predictable, usually lower cost, and is a reasonable choice for a team that already knows how to manage a Linux server and wants to avoid a platform's pricing model as usage grows. Vendor lock-in is worth weighing too: a PaaS's convenience usually comes with some platform-specific configuration that takes extra work to migrate away from later, while a Dockerized app on a VPS can move to almost any other host with little change.

When does it make sense to reach for containers or Kubernetes?

Docker alone, without Kubernetes, is worth adopting early regardless of hosting choice, since it packages the app with its dependencies so "works on my machine" stops being a real category of bug. Kubernetes specifically earns its complexity once there are genuinely many services that need independent scaling, rolling deployments, and self-healing across a cluster of machines, a coordination problem that doesn't really exist yet with one or two services.

Updated: August 17, 2026