A Shopify Plus Agency for Enterprise Builds and Migrations
The Shopify Plus agency behind work for Barnes & Noble, Glossier, and Everlane. SDG brings senior architecture, design, and engineering to enterprise migrations, custom storefronts, B2B, retail, and the integrations behind them. A Shopify Platinum Partner and Build Award winner, accountable from discovery through launch.
Trusted by brands that define their categories
A Shopify Plus agency for enterprise brands
Enterprise buyers need more than a theme team. SDG brings senior architecture, UX, engineering, migration, integration, analytics, accessibility, and launch accountability into one Shopify Plus program. Our proof includes complex commerce work for Barnes & Noble, Glossier, SKIMS, Netflix, Gap, Mattel, Everlane, Peet’s Coffee, and the MoMA Design Store.
Shopify recognizes SDG as a Platinum Partner, its highest current service-partner tier, and Shopify named SDG an inaugural Build Award winner. The senior people who scope the work remain accountable through implementation, cutover, stabilization, and continuous improvement.
Our Canadian commerce work includes direct engagements with Shopify itself, Indigo, and Browns Shoes: global hardware commerce, a national retail replatform, and a new bilingual storefront with custom retail applications.
Explore the builds behind our industry experience
Our case studies describe the published scope for each engagement. Explore full storefront builds for home brands Annie Selke and Rugs USA; beauty brand HAUS Labs; and apparel brands NAADAM and Ramy Brook.
For coffee commerce, see BIGFACE, Intelligentsia, and Stumptown Coffee. Intelligentsia and Stumptown were part of a coordinated Magento-to-Shopify migration program. Each project page distinguishes confirmed delivery from features or results that have not been published.
Make the platform, partner, and architecture decisions with evidence
Use these commercial services and decision resources to evaluate the move, define the investment, and resolve the highest-risk parts of an enterprise Shopify program.
What you receive before committing to the build
A useful discovery engagement turns an enterprise brief into decisions the business can approve. We document the customer journeys, operating constraints and system dependencies, then define a delivery scope and the evidence required to accept it.
- A requirements and dependency map: what Shopify owns, what stays in ERP, OMS or PIM, and who makes each decision.
- An architecture decision: why a native, Hydrogen or hybrid storefront fits the publishing, customer-experience and operating requirements.
- A scoped delivery plan: workstreams, owners, assumptions, unresolved risks and the inputs needed before implementation.
- An acceptance and cutover plan: representative buying journeys, data reconciliation, redirect validation, operational handover and go/no-go criteria.
For example, a buy-online, pick-up-in-store requirement should identify which system promises stock, how an order reaches the store, who handles a failed handoff, and what a successful pickup test must prove. This is an illustrative scope example; the deliverables and estimates depend on the actual systems and agreed engagement.
Bring your current architecture, commercial priorities and known constraints. Use our enterprise replatforming guide to prepare the internal team, or discuss Shopify Plus discovery with SDG.
When Shopify Plus is the right enterprise platform
Shopify Plus is a strong fit when a brand needs enterprise scale without owning an enterprise-sized commerce infrastructure: high-volume selling, multiple storefronts or markets, B2B, retail, sophisticated merchandising, extensible checkout and account experiences, and an ecosystem that lets the internal team move quickly.
The decision still needs evidence. We evaluate catalog shape, business models, international requirements, checkout logic, content operations, security, accessibility, team workflows, and every system behind the sale. Our Shopify consulting practice turns that evaluation into a defensible business case, total cost of ownership model, target architecture, and delivery roadmap.
Enterprise replatforming with every dependency visible
A Shopify Plus migration is a business transformation disguised as a website project. Catalog and customer data, order history, content, URLs, analytics, payments, tax, subscriptions, loyalty, ERP, OMS, PIM, fulfillment, service, and finance all need to work on the other side of the launch. We plan those workstreams together and rehearse the data and cutover before the live window.
SDG has migrated some of retail’s most demanding catalogs and operations, including Barnes & Noble and Everlane. See our enterprise Shopify migration practice and platform-specific guides for Salesforce Commerce Cloud (SFCC), Magento, Oracle ATG, AEM, and custom platforms.
Liquid, headless, or hybrid, chosen for operating fit
A well-engineered Liquid storefront gives many enterprise brands the best combination of speed, native capability, maintainability, and merchant control. Headless with Hydrogen and Oxygen earns its place when content, multiple experience surfaces, frontend autonomy, or a genuinely custom journey creates enough value to justify the added stack.
Compare two delivered approaches. For Glossier, SDG built a custom Liquid storefront with product discovery and build-your-own routines. For Barnes & Noble, the program uses Hydrogen and Oxygen with Sanity for content and a connected enterprise systems layer. Each case study describes the scope behind that choice.
When choosing a Shopify Plus partner agency, ask the team to show how the proposed architecture supports your publishing workflow, catalog, buying journeys, integrations, release ownership, and operating costs. Our Shopify partner agency practice starts with those requirements; the platform and frontend choices follow the evidence.
One platform across DTC, B2B, markets, and retail
Shopify Plus can consolidate customer experiences that previously lived in separate platforms. We build DTC and Shopify B2B storefronts, company accounts and contract pricing, international programs with Shopify Markets, and unified retail with Shopify POS. Shared platform capabilities reduce duplicate work while preserving the workflows each channel actually needs.
Where native Shopify is not enough, we extend it with custom applications, Checkout Extensibility, customer account and POS UI extensions, Shopify Functions, Flow, and carefully selected ecosystem products.
The systems layer determines whether enterprise commerce holds
Enterprise operations depend on reliable ownership and movement of product, price, inventory, customer, order, payment, fulfillment, return, and financial data. We integrate Shopify Plus with ERP, OMS, PIM, CRM, CMS, WMS, tax, payments, loyalty, analytics, and custom middleware using observable flows with retries, reconciliation, and recovery.
Our Shopify integrations include NetSuite, SAP, Microsoft Dynamics, Manhattan Active Omni (MAO), IBM Sterling, Salesforce, Salsify, Akeneo, Sanity, Contentful, and more. The goal is not to force Shopify to own everything; it is to make every system’s responsibility clear.
Platinum status, senior accountability
SDG has worked with Shopify since 2006 and won a Shopify Build Award for Glossier. Shopify positions Platinum, its top current service-partner tier, for global enterprise businesses. The credential matters because it is independently verifiable; the working model matters because senior people scope the program, make the architectural decisions, and remain present through delivery and launch.
See what SDG’s Shopify Platinum Partner status means for enterprise buyers, explore our enterprise Shopify case studies, or use our agency comparison for the proof behind the positioning.
Everything your store needs, from one senior team
SDG is a full-service Shopify partner. The same senior engineers and designers behind enterprise replatforms also take on focused projects, ongoing support, and everything in between — for brands large and small. One accountable team, end to end.
Strategy & architecture
Platform evaluation, TCO, roadmaps, and technical architecture grounded in two decades on Shopify.
UX/UI design
Brand-led storefront design and interface work, engineered to convert as well as it looks.
Storefront development
Theme and fully custom front-end builds, from a single template to a complete storefront.
Headless & composable
Hydrogen, Oxygen, and custom React storefronts engineered to hit performance budgets others miss.
Replatforming & migrations
Moves onto Shopify and Shopify Plus with reconciled data, cutover rehearsals, and recovery planning for complex retail catalogs.
Systems & data integration
ERP, OMS, PIM, CRM, and bespoke middleware — the back-office systems global retail runs on.
Performance engineering
Core Web Vitals, speed, and reliability treated as a baseline, not an afterthought.
Shopify SEO
Technical SEO, site architecture, and structured data so the right buyers find your store.
CRO & experimentation
Conversion-rate optimization and A/B testing that turn existing traffic into more revenue.
Support & retainers
Ongoing monthly support, maintenance, and enhancement — a senior team on call for your store.
Accessibility
WCAG-compliant builds and audits, so your storefront works for every customer.
Apps & custom functionality
Custom Shopify apps, checkout extensions, and bespoke features the platform doesn’t ship out of the box.
Frequently asked questions
What is a Shopify Plus agency?
A Shopify Plus agency specializes in building and scaling stores on Shopify Plus, the platform's enterprise tier: high-volume catalogs, custom checkout and automation, deep ERP/OMS integration, and architecture engineered to hold under peak traffic.
Is SDG a Shopify Platinum Partner?
Yes. SDG’s current profile in Shopify’s official Partner Directory identifies SDG as a Platinum Partner, Shopify’s highest service-partner tier, and SDG has worked on the platform since 2006.
What is the difference between Shopify Plus and a Platinum Partner?
Shopify Plus is a commerce plan and platform offering for larger merchants. Platinum is the highest current status a services company can earn in Shopify’s Partner Program. SDG builds Shopify Plus and Enterprise programs as a Platinum Partner.
Do you handle replatforming to Shopify Plus?
Yes. We migrate large, complex stores onto Shopify Plus with data reconciliation, cutover rehearsals, agreed acceptance criteria, and recovery planning to limit disruption. The launch plan and responsibilities depend on your current platform and scope.
Do you only work with enterprise brands?
Enterprise is our specialty, but we are full-service. We also take on focused projects, ongoing support, SEO, UX/UI, and Shopify B2B and wholesale work for growing brands.
Do you offer ongoing support and retainers?
Yes. Many clients keep us on a monthly retainer for support, maintenance, and continuous improvement long after launch.
Do you build headless and composable storefronts?
Yes. We build on Hydrogen, Oxygen, and custom React. Architecture and performance budgets are agreed during discovery, then checked against representative devices, traffic, and storefront journeys.