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Removing a list item with Terraform count can cause a cascade of destroy/recreate actions for all later instances. Using for_each keyed by a stable identifier avoids that by giving each instance a unique address.
When you need to create several similar resources, using for_each with a map of stable keys keeps addresses predictable, avoids unnecessary recreation, and makes refactoring safer. Learn how to refactor count‑based blocks, see a concrete example, and understand the trade‑offs.
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