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Restate auto-retries temporary issues like network glitches. But for business logic failures ("Hotel fully booked"), retrying won't help. Instead, Restate helps you gracefully undo previous steps using sagas - each action has a matching "undo" step that runs when needed.

When to use Sagas: - Business logic failures ("hotel full", "product not available") where retrying won't help - Cancelling ongoing requests, and letting them roll back Your system never ends up in a half-finished state!