The Shopify Plus agency enterprise brands actually keep.
Plus is not a bigger Shopify theme. It is checkout extensibility, Functions, B2B company accounts, Markets, and the staff seats an enterprise store actually uses. Choosing a Shopify Plus agency is choosing who sits in that stack with you after launch. IWD is a Shopify Plus partner with senior engineers, no junior bench, and no handoff between the people who plan the store and the people who ship it. Seventeen years of ecommerce, 300+ brands, and 94% of clients still here because Plus work compounds when the same team stays.
Shopify Plus development agency
A Shopify Plus development agency earns the title by shipping Plus-only surface area, not by wrapping a standard theme in a Plus contract. That means checkout UI extensions and Functions that survive Shopify releases, Hydrogen or headless when the storefront needs it, B2B catalogs and net terms on the same store as DTC, and Markets without standing up a second platform. We build that work as one senior team: strategy, conversion-led design, and engineering in the same weekly demo, not as three vendors arguing over whose ticket caused the delay.
We are candid about when Plus is the wrong upgrade. Plenty of eight-figure brands should stay on standard Shopify until custom checkout, B2B, or Markets Pro becomes a blocker. When Plus is the right move, you get a firm, itemized quote on the first call and a timeline you can hold us to. Shopify development services cover the engineering depth. This page is the Plus agency relationship. Comparing partners on a spreadsheet? Read the best Shopify Plus agencies in 2026 guide, then ask every shop on that list who will still know your theme in eighteen months.
Everything your store needs, from strategy through growth.
Start with one engagement or the whole journey. Either way, the same senior team carries it, so nothing gets lost between strategy, design, and code.
Credentials & recognition.
Adobe Solution Partner
Shopify Plus Partner
BigCommerce Elite Partner
Salesforce Partner
Klaviyo Partner
We're here to help you win, plain and simple.
Same senior team from kickoff to launch and beyond. We do not outsource, we do not disappear after go-live, and we do not hand you off.
Across every phase. Discovery, build, launch, and growth, the same senior team stays with you.
Shopify or Shopify Plus? When the upgrade pays for itself.
Shopify Plus is the enterprise tier, and the upgrade is worth it only when you use what it unlocks. As a Plus partner we are candid about the line: we move brands up when checkout, B2B, or scale demand it, and keep them on standard when it does not.
Standard Shopify already runs serious DTC volume with themes, apps, and the full API. Plenty of eight-figure brands operate here, upgrading only when a specific Plus feature becomes a blocker.
- You are scaling DTC on a proven setup
- No need for custom checkout or B2B yet
- Apps still cover your requirements
Plus adds checkout extensibility, Functions, B2B, Markets Pro, scripts, 200 staff accounts, and dedicated support, the toolkit for enterprise checkout, wholesale, and global selling.
- You need custom checkout or B2B
- International selling with Markets Pro
- Higher limits, staff seats, and an SLA
We size the upgrade against your numbers in a strategy consult. Comparing partners? See how we stack up in our Shopify Plus agency comparison.
Proof behind the partnership, not just a pitch.
A few of the stores our senior team has shipped, scaled, and stayed on to grow.
Europa Eyewear
A Shopify Plus wholesale storefront with SparkLayer B2B and a Mirakl marketplace for a global eyewear house.
QC Supply
An enterprise Magento B2B rebuild with GroupBy search and Microsoft Dynamics ERP for a high-SKU distributor.
US Camera Pro
A Magento store for a camera and optics retailer, with M2E marketplace sync across channels.
Merchants keep working with us, and say so in public.
“IWD has been a solid partner for over seven years. They take the time to understand our business and develop custom solutions to meet our unique requirements. They know e-commerce inside and out.”
“They go above and beyond to develop custom solutions to solve our unique needs. They can really do it all, and they truly care about our company's success.”
“IWD Agency is always responsive and they always follow back up after the job has been completed to make sure the job was done correctly.”
A Shopify Plus partner you can keep for years, not a project.
The best agency relationships compound. The longer a senior team knows your store, your catalog, and your customers, the faster every next build ships and the more it returns.
A Shopify Plus partner with real depth
We are a Shopify Plus partner with engineers who know the platform at the source level, from checkout extensibility and Functions to Hydrogen and the B2B and Markets tooling Plus unlocks.
One senior team, full stack
Strategy, design, development, and growth under one roof. No outsourcing, no junior bench, and no finger-pointing between vendors when something needs to move.
Seventeen years, 300+ brands
We have shipped enterprise DTC and B2B ecommerce since 2008, across high-volume consumer brands and complex wholesale catalogs that have to scale.
We stay for the growth
About 94% of our clients keep us on after launch. The agency that builds your Shopify Plus store is the one that keeps making it perform.
A clear path from first call to measurable growth.
Discover
Stakeholder workshops, a technical and conversion audit, and competitor benchmarks. We map current-state pain to a clear definition of done.
Strategy
A phased roadmap, scope, and timeline. We recommend the path that ships value fastest, whether that is a rebuild, a replatform, or focused fixes.
Build
Two-week sprints, weekly demos, and a shared backlog. You meet the same senior engineers, designer, and PM every week of the build.
Grow
Post-launch performance, CRO, and roadmap work. We do not walk away once it is live. We stay to move the numbers that matter.
You’ll know every name on your project.
- 175+ years of combined ecommerce experience.
- Senior developers & designers, dedicated PM & CXM.
- Over a decade together for most of us. Average tenure is nine years.
- 15 people. Bigger isn't always better.
What brands ask before choosing a Shopify Plus agency.
Why hire a Shopify Plus agency instead of a freelancer or in-house developer?
A single developer can close tickets, but an enterprise store needs strategy, design, senior engineering, and growth working together. As a full-service Shopify Plus agency, you get that whole team without the cost and risk of hiring each role yourself, and without the work stalling when one person is out.
Are you a Shopify Plus partner?
Yes. We are a Shopify Plus partner with deep platform experience across enterprise DTC and B2B. We build to Shopify standards using checkout extensibility, Hydrogen and headless where it fits, and the B2B and Markets tooling that Plus unlocks, so your store stays upgrade-safe.
What does a full-service Shopify Plus agency engagement include?
Ecommerce strategy and roadmap, UX and conversion design, senior Shopify Plus development, Hydrogen and headless storefronts, checkout extensibility, B2B and Markets, replatforming, CRO, and ongoing growth. You can start with one of these or the whole journey.
Can you migrate our store to Shopify Plus from another platform?
Yes. Replatforming is one of the most common reasons brands come to us. We carry over catalog, customers, orders, and SEO equity, plan the cutover in stages to de-risk it, and rebuild the storefront and integrations on Shopify Plus the right way.
Do you build Shopify Plus B2B and wholesale?
Yes. We build B2B on Shopify Plus with company accounts, catalogs, customer-specific pricing, net terms, and ERP integration, running alongside DTC on the same store. It is the same senior team across the consumer and wholesale sides of the business.
Can you take over a Shopify Plus store another agency built?
Yes, and it is one of the most common ways clients start with us. We run a code, theme, and conversion audit first, document what we find in plain language, then give you a prioritized plan before touching anything. No rebuild-everything reflex: if the foundation is solid we say so, and if it is not you will know exactly why.
How long does a Shopify Plus project take?
A focused audit and roadmap lands in two to three weeks. A design-led theme build or migration runs roughly two to four months. Enterprise replatforms, headless storefronts, and B2B builds typically run four to nine months. You get a real timeline in week one, and two-week sprints with weekly demos keep the build visible the whole way.
How do you scope and quote a Shopify Plus engagement?
Every engagement is scoped to your business: where you are today, what you want to build, the number of markets, B2B requirements, and the work it takes to get there. You get a firm, itemized quote on the first call, with no long sales cycle, so there are no surprises before anything begins.
How much does a Shopify Plus agency cost?
Pricing follows scope: catalog size, integrations, markets, B2B requirements, and whether it is a new build, a migration, or ongoing growth work. Rather than publish a one-size rate card, we scope on the first call and give you a firm, itemized quote with no long sales cycle. You know the real number before you commit to anything, and the quote holds.
Let's build a Shopify Plus store worth keeping.
Tell us where you want the business to go. We will come back within one business day with a real plan, a real timeline, and a real number.
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