What is Heroku?

Heroku is a cloud platform that lets companies/developers build, deliver, monitor and scale applications. Developers can deploy their code written in Node, Ruby, Java, PHP, Python, Go, Scala, or Clojure to a build system which produces an app that’s ready for execution. The system and language stacks are monitored, patched, and upgraded, so it’s always ready and up-to-date. The runtime keeps apps running without any manual intervention.

How does the free version work?

Instead of hardware management, you deploy an app to Heroku, which packages the app’s code and dependencies into containers — lightweight, isolated environments that provide memory, an OS, and an ephemeral filesystem. …

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