Which funnel step normally has the biggest drop-off?
View Item → Add to Cart (because viewing doesn’t mean purchase intent)
What does a healthy funnel look like?
High Search→View; large drop at View→Add; stable downstream steps.
What does a broken funnel look like?
Big drops at Add→Checkout or Checkout→Purchase (these should be stable).
What does improvement in Search → View Item usually signal?
Better ranking relevance, thumbnails, or Shopping Graph quality.
What does improvement in View Item → Add to Cart usually signal?
Better PDP content: images, attributes, price freshness.