Prompt Engineering at Scale: When It Becomes Software Engineering

In the first months of an AI initiative, prompt engineering is something an individual engineer does in an afternoon. By the time a dozen features are in production, the prompts have accumulated across files, the behavior they encode is load-bearing, and nobody on the team can confidently say why a particular instruction is phrased the way it is. The notebook-level activity has quietly become software, and the team is maintaining it the way it was before the stakes went up. This post is about th