How to Migrate from Terraform to OpenTofu Safely Without Breaking Production

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Developers migrating from Terraform to OpenTofu can follow a low-risk, step-by-step process because both tools share the same HCL configuration format and state files. The migration essentially involves swapping the binary rather than rewriting infrastructure code, with rollback possible at nearly every stage by reverting to the Terraform binary. Before switching, teams should pin both the Terraform version and provider versions to establish a stable baseline for comparison. The critical safety check is running a plan with OpenTofu against existing state to confirm zero changes before any apply is executed. Common issues include provider version mismatches and registry source differences, which must be resolved before proceeding workspace by workspace.

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