Shopify Plus development for enterprise and high-growth brands.
Checkout Extensibility, Shopify Flow automation, native B2B, and multi-store international expansion. We build and scale Shopify Plus stores for merchants who have outgrown standard plans and need enterprise-grade architecture, not a bigger version of the same theme.
The plan you move to when standard Shopify has a ceiling.
Shopify Plus removes three specific constraints: checkout customization, cross-border expansion, and automation at scale. We build for all three.
Full Checkout Ownership
Standard Shopify limits how far you can customize checkout. Plus opens it up completely through Checkout Extensibility: custom fields, upsells, loyalty integration, B2B payment terms, and branded post-purchase flows, all built as supported Checkout UI Extensions and Shopify Functions.
Multi-Store and B2B
Up to nine additional stores for international or brand expansion, plus native B2B: company accounts, custom catalogues, net payment terms, and PO checkout, running from the same Plus backend as your DTC storefront.
Flow and Higher Limits
Shopify Flow automates the manual work that eats an ops team's week: fraud checks, tagging, low-stock alerts, order routing. Combined with Plus's higher API rate limits, integrations with your ERP or CRM run at the volume enterprise operations actually need.
Every enterprise capability Plus unlocks.
We work across the full Shopify Plus toolset, not just the theme layer.
Checkout Extensibility
Custom Checkout UI Extensions and Shopify Functions replacing checkout.liquid: loyalty point redemption, custom upsells, B2B terms selectors, and validation logic, all on Shopify's supported extension framework.
Shopify Flow Automation
Workflow automation for fraud flagging, VIP tagging, inventory alerts, multi-store order routing, and syncing events to your ERP or CRM without custom middleware or manual ops work.
Native B2B on Plus
Company profiles, customer-specific catalogues and price lists, quantity rules, net payment terms, and PO checkout, running as a wholesale channel alongside your DTC storefront.
Multi-Store Expansion
Architecture and build-out for up to nine additional Plus stores: localized currency, language, catalogue, and pricing per region, coordinated with Shopify Markets Pro where cross-border duties and tax apply.
Shopify Functions
Custom discount logic, shipping method customization, payment customization, and cart transforms built as Shopify Functions, running server-side with the performance and reliability Plus merchants need at volume.
Launchpad Campaigns
Scheduled, high-traffic campaign launches (product drops, flash sales, Black Friday) configured through Launchpad for automatic theme swaps, inventory changes, and price updates at a precise go-live moment.
Enterprise Integrations
Higher API rate limits on Plus support real-time, high-volume integration with ERP, CRM, WMS, and accounting systems. We have built live Odoo, Klaviyo, Xero, and 3PL integrations at Plus scale.
Custom Apps for Plus
Private apps built against Plus's higher API limits when off-the-shelf tools cannot keep up with order volume or workflow complexity. We publish five apps on the Shopify App Store, so our custom app work meets the same production bar.
Migration to Plus
Full replatforming to Shopify Plus from standard Shopify, Magento, BigCommerce, WooCommerce, or Salesforce Commerce Cloud, including checkout.liquid to Checkout Extensibility rebuilds, with zero-downtime cutover and SEO redirects preserved.
From Plus onboarding to launch day.
Enterprise Discovery
We map your current checkout customizations, integration surface, order volume, and any multi-region or B2B requirements. This becomes a scoped Plus architecture plan and fixed-price quote, not a generic proposal.
Architecture and Design
We design the Checkout Extension logic, Flow automations, and any multi-store or B2B structure before development starts, so integration points and edge cases are resolved on paper first.
Build in Parallel Sprints
Theme, Checkout Extensions, Functions, Flow workflows, and integrations built in parallel with weekly staging reviews, so you can click through real progress rather than wait for a single big reveal.
Load and Checkout Testing
Checkout flow tested against every payment method and B2B path you support, plus a performance audit sized for your real traffic, not a demo store's traffic.
Launch and Ongoing Support
Coordinated cutover with zero downtime, documentation for your team, and thirty days of post-launch support included. Many Plus clients continue with us on an ongoing retainer for Flow, Functions, and integration work as the business grows.
Plus expertise built on running production Shopify apps, not just theme projects.
We publish five apps on the Shopify App Store: Miko Loyalty and Rewards, Miko B2B Wholesale Hub, Miko AI, Miko Product Rentals, and the Live Odoo Connector. Building and maintaining live apps at scale means we understand Shopify's Admin API, Storefront API, and Plus-tier rate limits from the inside, not just from documentation. That translates directly into Checkout Extensions and Flow automations that hold up under real order volume.
We have been a certified Shopify Plus Partner since 2016, with over 4,000 Shopify projects delivered for DTC brands, B2B wholesalers, and hybrid businesses across New Zealand, Australia, the USA, the UK, and Canada. With 207 verified reviews at 5.0 on the Shopify Partner Directory, we hold one of the highest confirmed review counts of any Shopify agency in the Asia-Pacific region.
Talk to Our Team
Shopify Plus Development: Common Questions
What makes Shopify Plus different from standard Shopify?
Plus removes the checkout customization limits of standard plans, adds Checkout Extensibility for a fully custom checkout, includes Shopify Flow for automation, gives you up to nine additional stores, unlocks native B2B, raises API rate limits substantially, and includes a dedicated Launch Engineer. It is built for merchants with high volume or complex, multi-region operations.
How much revenue do I need before moving to Plus?
There is no fixed revenue rule. Plus makes sense once you hit the checkout customization ceiling on standard plans, need multiple storefronts or regions, want native B2B alongside DTC, or order volume justifies the higher plan cost. Most merchants we move to Plus are doing seven figures or more annually, but the real trigger is a specific limitation, not a number.
What is Checkout Extensibility and do I need to migrate?
Checkout Extensibility replaced checkout.liquid, which Shopify has deprecated. Any Plus merchant still running a customized legacy checkout needs to rebuild that customization as Checkout UI Extensions and Shopify Functions. We audit your existing checkout.liquid customizations, rebuild each as a supported extension, and test thoroughly before cutover.
Can you migrate us from standard Shopify to Plus?
Yes. We handle Plus upgrades end to end: replatforming theme customizations, rebuilding checkout logic as Checkout Extensions, setting up Flow, configuring B2B where needed, and coordinating the plan change with Shopify. We also migrate directly to Plus from Magento, BigCommerce, WooCommerce, and Salesforce Commerce Cloud with zero downtime.
Do you build Shopify Plus B2B stores?
Yes. Native B2B on Plus is one of our specialisations: company profiles, customer-specific catalogues and price lists, quantity rules, net payment terms, and PO checkout, running as a wholesale channel alongside your DTC storefront. We hold Shopify's B2B certification.
What does a Plus build cost and how long does it take?
Plus projects with custom Checkout Extensions and integrations typically start from USD 15,000 and scale with scope. Timelines usually run 10 to 20 weeks for a full build, shorter for a checkout.liquid migration alone. We provide a fixed-price quote and firm delivery date before any work begins.
Do you set up Shopify Flow automations?
Yes. We build Flow automations for fraud flagging, VIP tagging, low-stock alerts, multi-store order routing, loyalty tier updates, and syncing order events to your ERP or CRM without custom middleware. Most Plus merchants we onboard are running fewer than five workflows; we typically ship ten to twenty tailored to their business.
Can you help us expand into new countries with Plus?
Yes. Plus gives you up to nine additional stores, which we use for true multi-region expansion: localized currency and language, region-specific catalogues and pricing, local payment methods, and duties and tax handling through Shopify Markets Pro where relevant.
Ready to scale on Shopify Plus?
Tell us where the ceiling is. We will scope it, price it, and deliver enterprise-grade Shopify Plus architecture on time.
Talk to Our Plus Team