Shopify Plus Development

Checkout extensibility, Shopify Functions, B2B, international commerce, and scalable storefront architecture.

Service overview

Shopify Plus unlocks checkout extensibility, B2B commerce, multi-store management, and higher API limits—but only if your architecture is built to use them. We help enterprise and high-growth brands implement Plus features without sacrificing performance or maintainability.

Shopify Functions are central to how we customize backend logic on Plus. Functions run server-side at checkout to control discounts, cart and checkout validation, delivery options, and payment customization—replacing legacy Script Editor approaches with a supported, scalable model. Combined with checkout UI extensions, headless storefronts, and B2B catalogs, we build Plus implementations that scale with your business.

Common problems we solve

  • Legacy checkout scripts are deprecated or too fragile to maintain.
  • Complex discount, shipping, or payment rules cannot be handled with standard settings.
  • B2B buyers need custom pricing, net terms, and catalog visibility that DTC setups lack.
  • International expansion requires markets, duties, and localized checkout experiences.
  • The brand wants a headless or hybrid storefront while keeping Shopify as the commerce engine.

What we deliver

  • Shopify Functions for discount logic, cart transforms, checkout validation, delivery customization, and payment customization.
  • Checkout UI extensions and post-purchase flows on Shopify’s extensible checkout.
  • B2B storefront setup: company accounts, catalogs, price lists, and payment terms.
  • Shopify Markets configuration for multi-currency, multi-language, and duties/taxes.
  • Headless or hybrid storefronts using Hydrogen, Next.js, or custom front-ends with the Storefront API.
  • Multi-store and expansion store architecture with shared inventory and reporting.
  • Shopify Flow automations, Launchpad campaigns, and Plus-specific operational tooling.
  • Performance, security, and compliance review for high-volume checkout traffic.
  • Documentation and training for internal teams managing Plus features post-launch.

Technology

Shopify PlusShopify Functions (Rust / JavaScript)Checkout ExtensibilityCheckout UI ExtensionsStorefront APIHydrogen / RemixB2B on ShopifyShopify MarketsShopify FlowLaunchpad

Typical timeline

Checkout Functions and UI extension projects typically run 6–10 weeks. Full Plus launches with B2B, markets, and headless storefront components range from 10–20 weeks depending on integration depth and the number of regions or storefronts.

Next step

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