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Using infrastructure as code

Today, infrastructure as code (IaC) and immutability are closely tied together. IaC allows us to define everything as code, while immutability brings uniformity, reliability, and speed. Servers are defined as code in the form of configurations, and scripts are used to create VM images. Clusters are defined as code in the form of instructions for how to create and manage VMs based on those images and how to tie them together through different services.