Shopify
Shopify's native checkout is the single biggest reason merchants have broken tracking. AtriTap generates a GTM + GA4 plan that fires add_to_cart and begin_checkout on the storefront, plus the correct purchase push on the Thank You page via a ScriptTag or checkout.liquid (Shopify Plus).
No. The Thank You page purchase event works on standard Shopify via a ScriptTag. Plus just offers more control via checkout.liquid.
Yes. Shop Pay orders land on the same order status page and the purchase event fires correctly.
Yes, they run side by side. Shopify Analytics is a separate reporting surface; AtriTap's job is to make your external tracking (GA4, Meta, Google Ads) accurate.