If Terraform already provisions everything, why keep Packer in the stack? Make the case for both.

Terraform shapes the world; images define what boots inside it. Bake contents into versioned artifacts on a patch cadence, roll fleets by replacement, and keep user_data for identity and wiring only.

Updated Sep 2026 · Grounded in researched DevOps, SRE and platform engineering interview loops, written to a senior-engineer editorial bar, and never padded to hit a word count.

Terraform shapes the world; images define what boots inside it. Bake contents into versioned artifacts on a patch cadence, roll fleets by replacement, and keep user_data for identity and wiring only.

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UP NEXT ON YOUR JOURNEY

Next in this trackEveryone does GitOps for Kubernetes. Can the same model govern plain cloud infrastructure, and what breaks in translation?Next in this trackTerraform rotates the production database password tonight. Walk me through how every application survives the change.Next in this trackDesign the publishing flow for an internal Terraform module registry: what gates a release, and how do modules retire?

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