Shopify

Theme app extension

Definition

The modern (Online Store 2.0) mechanism Shopify apps use to inject blocks into a theme's sections, replacing older raw script-tag injection. Better for merchant control and removal, but still loads app JavaScript on render — consolidation still matters even on OS 2.0 themes.

Defined in The 6-8 App Rule: A Shopify App Audit Method.

Related terms

Hydrogen: Shopify's storefront toolkit for custom frontends. A Hydrogen project is a React Router app with Shopify API clients, components, and a CLI. It is Shopify's recommended way to build a headless storefront.
Oxygen: Shopify's edge hosting for Hydrogen. It runs a worker-based JavaScript runtime, ships with the Hydrogen sales channel, and is included at no extra charge on paid plans. You can self-host Hydrogen elsewhere, but Oxygen is the default path.
Checkout extensibility: Shopify's framework for customizing checkout using UI extensions and checkout functions instead of editing checkout.liquid directly. It lets merchants add or modify specific, sanctioned surfaces of checkout — banners, fields, upsells, delivery options — while Shopify continues to own and update the core checkout flow underneath.
Agent-collected context: Structured facts a shopper reveals during a Brand Agent conversation - stated preferences, product questions, unresolved needs - extracted and stored as tagged profile fields rather than kept as raw conversation transcript.
Decoupled system: Two systems that exchange only a narrow, well-defined set of signals rather than sharing full access to each other's data - so a change or failure in one does not cascade into the other, and neither system accumulates data it doesn't need.
Semantic search: Search that matches the meaning of a query to the meaning of product data — usually via vector embeddings — instead of matching the literal keywords. "Couch" finds sofas; "something for cold mornings" finds insulated mugs and thermal layers.

All 112 terms

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