xFrontend Module 

xFrontend is the “frontend experience API” module for Virto Commerce, built on top of the backend xAPI modules such as catalog, cart, orders, CMS, and profile.  

It exposes dedicated, frontend‑optimized endpoints and queries so web, mobile, and other store‑facing apps receive exactly the data they need efficiently and consistently. By separating backend business logic from UI rendering concerns, it supports a modular, composable architecture where multiple storefronts can share the same backend. 

The xAPI family provides the core backbone for Virto’s headless and composable approach, handling domains like catalog, cart, orders, CMS, and profile.  

xFrontend sits on top of these services and does not reimplement business logic. Instead, it aggregates, selects, transforms, and exposes “frontend‑friendly” queries such as product listings, category trees, cart summaries, navigation, and content pages.  

This backend‑for‑frontend layer reduces round‑trips, abstracts backend complexity, and lets frontend apps call a smaller, optimized API surface rather than many low‑level endpoints.  

As a result, backend modules can evolve independently from frontend concerns, while frontends can change or be replaced without disrupting core services. 

• Quick launch of consumer‑facing storefronts, optimized product and category browsing.
• Fast page loads and UX for modern SPA or PWA storefronts.
• Clean UI delivery over backend complexity like custom catalogs, pricing, permissions, workflows. 
• Custom portals per buyer or segment in B2B/wholesale scenarios.  
• Multiple frontends sharing backend data per brand, region, or channel. 
• Frontend data shaping for vendor listings, filters, and pages in marketplaces. 
• Headless commerce with clean API for web, mobile, and kiosk frontends. 

• Frontend developers and engineers: Use xFrontend as the API gateway for storefront code. Instead of dealing with low‑level backend APIs, they work against a clean, UI‑oriented API interface, simplifying page rendering, component data fetching, navigation, etc. 
• Implementation partners and integration teams: Makes it easier to build or adapt UIs without deep backend module knowledge for customization, theming, custom storefronts, or multi‑storefront setups.
• Business and product owners: Shortens time to deliver storefront UI changes, reduces risk and coupling, and accelerates UX iteration.  
• Multi‑portal, multi‑brand, and omnichannel users: Customers runs multiple storefronts (brands, channels, locales) can reuse backend while allowing differentiated, independent frontends built fast. 

• Faster time to market: Easier to build new storefronts, brand sites, and regional variants because frontend teams work with optimized APIs instead of backend complexity.
• Lower maintenance and TCO: Reduced risk and cost, since decoupling frontend and backend changes on one side do not force refactoring on the other.
• Scalability and flexibility: Backend modules can evolve and gain new features without frontend rewrites, while frontends can be swapped or redesigned without disrupting core services.
• Multi‑storefront and multi‑channel support: Numerous channels can share a single backend, while each storefront keeps its own tailored experience and presentation layer.
• Higher development velocity and agility: Teams can run faster UX experiments, customizations, and site launches with less coordination overhead and lower implementation risk.