Full bundle page or drop-in section — which should I use?

A full bundle page is a complete builder that gets its own page — best when the bundle is a destination you send traffic to. A drop-in section is lighter and goes anywhere via “Add section” in the theme editor — best for adding a builder to an existing product, collection, or landing page. Drop-ins auto-detect the campaign on product and collection pages.

Both appear as their own section on the page. To show the offer inside your existing product section — next to the add to cart button, like a buy-more-save-more picker for that product — add the Bundle block instead: the button on Theme setup opens your theme editor with it already in place, and it shows the right campaign for the product automatically.