4.1 — Campaign Architecture

Lessons for Campaign Architecture.

Numbered lessons

1. Assign Each Campaign One Job — Separate discovery, ranking, defense, product targeting, and profit campaigns so budget and performance are interpreted correctly.
2. Set Budget Guardrails — Translate contribution margin, launch stage, cash position, and inventory coverage into daily and weekly spend limits.
3. Harvest and Block Search Terms — Move converting search terms into control campaigns and add negatives where spend has proven unproductive.