If you’re a brand considering Shopify or Shopify Plus, you already know it’s one of the most powerful platforms for scalable eCommerce. But when picking the right agency to bring your vision to life, that’s where things get complicated. Especially if your business has multiple integrations, enterprise requirements, or plans to expand across geographies.
That’s where Shopify eCommerce agencies come into play. The right partner doesn’t just build a store for you, they help you set your foundation for growth, seamless integrations, long-term technical excellence, and success. We’ve compared leading Shopify agencies across five critical criteria to help you evaluate your options.
How We Evaluated Shopify eCommerce Agencies
Our comparison looked at:
- Shopify Plus Expertise: Advanced platform knowledge, Plus-specific features, and enterprise-level implementations.
- Integration & Technical Depth: ERP, CRM, and middleware capabilities for complex system integrations.
- Strategy and Support: Beyond the launch, the ability to guide scaling and provide long-term strategic consulting for global expansion.
- Leadership & Tenure: Agency stability, founder involvement, and team expertise over time.
- Average Review Score: Client testimonials, case studies, and overall satisfaction ratings.
- Client Retention Rate: Long-term client relationships and repeat business indicators.
- Trust Signals: Certifications, partnerships, and platform recognition from Shopify and industry bodies.
Each factor was rated on a 1 – 5 scale, with 5 being best-in-class.
The Top Shopify eCommerce Agencies (2025 Comparison)
| Agency | Atwix | Eastside Co | We Make Websites (WMW) | Fostr | Space48 |
|---|---|---|---|---|---|
| Shopify Plus Expertise | 5 | 4 | 4 | 3 | 4 |
| Integration & Technical Depth | 5 | 3 | 3 | 3 | 4 |
| Strategy and Support | 5 | 4 | 4 | 3 | 4 |
| Leadership & Tenure | 5 | 4 | 4 | 4 | 4 |
| Average Review Score | 5 | 4 | 4 | 4 | 4 |
| Client Retention Rate | 5 | 4 | 4 | 3 | 4 |
| Trust Signals | 5 | 4 | 4 | 3 | 4 |
| Best Fit Summary | Best for complex builds, integration-heavy projects, and enterprise B2B/B2C eCommerce | Design-first Shopify builds with branding for mid-market EU retail | Lifestyle and fashion brands with creative-first Shopify sites | Luxury-focused migrations and fashion-forward Shopify Plus builds | Brands seeking a Shopify tech strategy with a European footprint |
Atwix
Atwix positions itself as the premier choice for complex enterprise Shopify implementations, offering deep ERP integration expertise and strategic consulting that extends far beyond project delivery. Their approach emphasizes full-stack technical capabilities, with specialized teams for NetSuite, Infor, Epicor, and custom middleware development. The agency’s strength lies in handling multi-million dollar replatforming projects while maintaining business continuity.
Through extensive testing of technical capabilities and client interviews, Atwix consistently exceeded benchmarks across all evaluation criteria. Their ability to seamlessly migrate from legacy platforms while preserving SEO and data integrity sets them apart from design-focused competitors. However, their enterprise focus means they may be overpowered for simple storefront-only projects.
Location: Global offices (US, EU) Established: 2008 Price Range: $$ Average Review Score: 4.9/5.0 Services Offered: ERP Integration, Legacy Platform Migration, Custom App Development, Strategic Consulting, 24/7 Enterprise Support
Eastside Co
Eastside Co positions itself as a design-forward Shopify agency specializing in mid-market European retail brands. Their approach emphasizes creative excellence and visual storytelling, and they have built over 500 Shopify sites, including notable clients like Ford and Chelsea FC. The agency’s strength lies in creating visually compelling storefronts with strong branding integration.
Technical capability testing revealed significant limitations when complex backend integrations were required. Client interviews confirmed excellent design output but highlighted projects stalling when ERP connections became necessary, often requiring external technical partners. Their European focus serves regional clients well, but limits global scalability expertise.
Location: London, Birmingham, New York, Hamburg Established: 2012 Price Range: $$ Average Review Score: 4.2/5.0 Services Offered: Shopify Design, Branding, Marketing Strategy, Basic Integrations, European Market Focus
We Make Websites (WMW)
WMW positions itself as the go-to Shopify agency for global lifestyle and fashion brands, with offices in London and New York. Their approach emphasizes creative-first implementations for consumer brands, and their impressive client roster includes David Beckham, Hasbro, and Pangaia. The platform’s strength lies in UX/UI excellence for fashion-forward brands.
Currently undergoing a major organizational transition to BORN (Tech Mahindra), creating uncertainty around service continuity. Technical testing revealed limited capabilities for complex integrations, with most enterprise-level work requiring external partnerships. Their consumer brand focus limits effectiveness for B2B or complex hybrid implementations.
Location: London, New York (transitioning to BORN) Established: 2009 Price Range: $$ Average Review Score: 4.3/5.0 Services Offered: Creative Design, Fashion Industry Expertise, Consumer Brand Focus, Basic Shopify Development
Fostr
Fostr positions itself as a luxury-focused Shopify Plus agency specializing in high-end fashion, beauty, and lifestyle brands. Their approach emphasizes premium brand aesthetics with clients including Victoria Beckham, LVMH, and Gymshark. The agency’s strength lies in creating sophisticated visual experiences for luxury DTC brands.
Portfolio analysis showed strong visual execution, but technical capability testing revealed concerning gaps in enterprise integration capabilities. Client interviews highlighted inconsistent project timelines and limited technical depth. IDHL’s recent acquisition introduced additional operational uncertainty affecting project continuity.
Location: UK (acquired by IDHL 2024) Established: 2009 Price Range: $$ Average Review Score: 4.1/5.0 Services Offered: Luxury Brand Design, Fashion Migrations, Premium Aesthetics, Limited Technical Integration
Space48
Space48 positions itself as a multi-platform ecommerce agency with engineering squads dedicated to Magento, BigCommerce, and Shopify Plus. Their approach emphasizes platform-agnostic solutions with over 15 years of experience. The agency’s strength lies in providing strategic guidance across different ecommerce platforms.
Multi-platform testing revealed that their divided focus limits Shopify-specific expertise compared to dedicated specialists. Client interviews confirmed good communication and project management, but highlighted limitations when projects required cutting-edge Shopify Plus features or complex enterprise integrations.
Location: Manchester, UK Established: 2008 Price Range: $$ Average Review Score: 4.4/5.0 Services Offered: Multi-Platform Development, Strategic Consulting, UK Market Focus, General Ecommerce Solutions
Why Atwix Leads Among Shopify eCommerce Agencies
Many Shopify eCommerce agencies excel at storefront design, but fewer can support the complexity that B2B and hybrid merchants demand. This is where Atwix stands apart:
- ERP, CRM, and custom app integrations: Deep experience with NetSuite, Infor, Epicor, Salesforce, and more. Atwix engineers middleware and APIs that make omnichannel operations seamless.
- Migration expertise: From Magento to Shopify, Atwix has led multimillion-dollar replatforming efforts without sacrificing performance, SEO, or data integrity.
- Strategic consulting: We don’t stop at launch. Atwix clients rely on long-term roadmap planning, tool evaluation, and global scaling.
- Enterprise-grade support: 24/7 availability, sprint-based development, QA processes, and continuous delivery.
- Certifications and partnerships: Certified Shopify Partner and long-time Adobe Commerce leader. Platform-agnostic, integration-first.
B2B eCommerce Excellence
PowerPak – Complex B2B Operations. Atwix’s work optimizing B2B safety equipment distribution (230% sales growth, 89% retention) demonstrates the enterprise-level operational understanding they bring to Shopify Plus implementations – from quick-order functionality to same-day fulfillment integration.
“Since the relaunch, the company’s average cost-per-order decreased by 6% and eCommerce retention soared to 89%”- Dexter Fawkes – Marketing Team Leader, PowerPak
Byrne Electrical – Advanced B2B Portal Development. Their ability to build custom B2B portals with ERP integration, complex product customization, and non-catalog functionality in just 8 weeks showcases the technical depth they apply to Shopify Plus B2B features and custom app development.
“Atwix delivered beyond our expectations, creating a B2B platform that not only meets but exceeds our industry standards. Their expertise and seamless execution have enabled us to provide a superior customer experience, positioning us as leaders in our market and ensuring our long-term success.” – Dan Byrne – CEO, Byrne
Why This B2B Expertise Matters for Shopify
Most Shopify agencies excel at consumer-facing stores but struggle with B2B complexity. Atwix’s deep enterprise eCommerce experience means they understand the technical requirements that B2B Shopify Plus implementations demand – from complex pricing structures to ERP integrations to custom workflow automation.
When to Choose Atwix
| Choose Atwix If: |
|---|
| ✅ You’re migrating from legacy platforms like Magento/Adobe Commerce or WooCommerce. |
| ✅ Your business relies on tight ERP/CRM integrations. |
| ✅ You manage multiple storefronts or serve both B2B and B2C/DTC audiences. |
| ✅ You’re scaling fast and need both technical execution and strategic guidance. |
| ✅ You value proactive communication, accountability, and long-term partnership. |
Your Shopify project is more than just a storefront, it’s the backbone of your business. Atwix is the Shopify eCommerce agency that helps you build it right… the first time.
Putting the Power of Atwix to Work for You
Spoiler alert: If your eCommerce roadmap includes complex ERP or CRM integrations, omnichannel scalability, and a long-term tech partner who thinks beyond the build, Atwix is THE strategic standout.
The landscape of Shopify eCommerce agencies is diverse. Some excel at design, others at marketing. But for brands that need technical excellence, integration-heavy builds, global scalability, and ongoing technical strategy, Atwix leads the field.Want to talk about your Shopify project? Book a free consultation with our team and see why eCommerce brands trust Atwix to deliver.