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Mar 16, 2026 · Industry Insights

How Fitness Functions Can Define “Done” for AI‑Driven Software Development

The article explains how AI‑powered agents change software delivery, why traditional notions of task completion no longer apply, and how a Fitness Function‑based harness engineering approach—illustrated with the Routa project—encodes executable, auditable completion criteria, hard‑gate checks, and contract consistency to reliably guide agents through the development loop.