“Infrastructure is described using a high-level configuration syntax. This allows a blueprint of your datacenter to be versioned and treated as you would any other code. Additionally, infrastructure can be shared and re-used.”
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Infrastructure as Code (IaC) is the process of managing and provisioning computer data center resources through machine-readable definition files, rather than via physical hardware configuration or interactive configuration tools. The IT infrastructure managed by this process includes physical equipment, such as bare-metal servers, and virtual machines and associated configuration resources. The definitions may exist in a version control system rather than manual processes. Definition files may use either scripts or declarative definitions, but IaC more often employs declarative approaches.