What Is Infrastructure as Code (IaC)? Definitive Guide

Infrastructure as Code (IaC) is the practice of defining and provisioning infrastructure through machine-readable configuration files rather than manual processes. Instead of clicking through a cloud console, you write code that describes the desired state.

Tools and Approaches

Two main philosophies: declarative (describe the end state, the tool figures out how to get there — Terraform, CloudFormation) and imperative (step-by-step instructions — Ansible, shell scripts). Declarative is more common and less error-prone.

OpenClaw as IaC for Deployments

OpenClaw's JSON configuration is a form of IaC for your AI gateway. Your openclaw.json config is version-controlled, defines your entire deployment (model, channel, tokens, rules), and can be applied consistently across environments.

Fly.io and IaC

Fly's fly.toml is checked into your repo and defines app configuration — regions, scaling rules, environment variables, volumes. Combined with OpenClaw's config, you have a fully version-controlled deployment definition.

When IaC Matters

IaC becomes essential when you have multiple environments (dev/staging/prod), a team, or need reproducible infrastructure. For single deployments, it adds overhead — but OpenClaw makes it easy enough that it's still worth doing.