GA4 eCommerce purchase-funnel analytics focused on conversion health and revenue impact. Track gross purchase revenue, ecommerce purchases, total users, first‑time purchasers, and AOV in one view. Compare Cart, Checkout, and Purchase conversion rates over time and diagnose drop‑offs. Break performance down by session source/medium with item views, add‑to‑cart, checkouts, purchases, revenue, and revenue share, with period‑over‑period and year‑over‑year trends.