E-commerce agency for mid-sized and enterprise businesses

An e-commerce agency plans, designs, builds and runs online shops. That covers everything from strategy through UX design and development to ongoing optimization after go-live. The difference from a pure web design agency: e-commerce specialization means experience with platforms like Shopware and Shopify, with ERP integrations, checkout optimization, payment connections and conversion strategies. At ONEDOT, consulting, design and engineering also work together in one team instead of across agency borders.

If your shop is meant to be more than a digital business card: yes. A specialized e-commerce agency brings experience with platform architectures, migration paths, checkout optimization and ERP integrations that a generalist agency doesn't cover in depth. Specialization pays off especially for relaunches, B2B requirements or international scaling.

No platform is better per se. It depends on your business model. Shopware 6 suits B2B scenarios with complex integrations, custom price lists and deep ERP needs. Shopify Plus is strong in D2C, international rollout and fast time to market. We advise platform-neutrally: the platform follows the strategy, not the other way around. More on our shop system comparison page or in our e-commerce consulting.

In eight phases: e-commerce strategy, architecture & information structure, data migration, UI design, setup & hosting, technical implementation, go-live and retainer. We don't work in a rigid waterfall but use agile elements where they make sense. Every phase has clear deliverables, and you're involved throughout. The retainer after go-live isn't upselling but part of how we see it: go-live is the starting point.

Yes. Conversion optimization is part of ongoing operations for us, not a one-off project. On a retainer, we analyze checkout abandonment, page exits and click paths, form hypotheses and test them with A/B testing. That covers everything from the product detail page through the cart to the payment flow.

If you're looking for a conversion optimization agency that only tweaks landing pages, we're not the right fit. We go deeper: UX audits, a data-driven page structure, performance optimization and ERP-side processes that slow down the checkout. At Bruno Banani, this brought +27.91% conversion rate, at Delife +69.57%. These numbers don't come from a relaunch alone but from the work afterwards.

Strategy, design and engineering come from one team. The briefing doesn't get lost and the quality bar stays high throughout. Two German Design Awards 2026 show that design and engineering are equals here. On top of that, ONEDOT manages the whole partner ecosystem: hosting, payment, ERP. You have one point of contact. And we stay after go-live: data-based optimization on a retainer instead of handover and goodbye. Measurable: Bruno Banani reached +27.91% conversion rate after the relaunch.

Costs depend on scope, platform choice, integration depth, design complexity and content volume. An MVP has a different frame than an enterprise relaunch with ERP integration and international rollout. We calculate transparently and name all cost drivers in the first conversation. No hidden items, no surprises during the project.

You do. 100% code ownership. Every ONEDOT project is documented cleanly and built so that you could continue it with another team. No vendor lock-in, no proprietary dependencies.

Both, and in the same team. Consulting comes first: status quo analysis, system selection, commerce roadmap. Implementation follows directly, without an agency switch or a new briefing. And after that: ongoing optimization and development on a retainer. One e-commerce provider covering the whole cycle, from the first question to continuous improvement.

That depends on scope. A Shopware or Shopify relaunch with an existing design system, a clear data structure and a manageable range can go live in 3 to 4 months. More complex projects with B2B logic, ERP integration, data migration and a custom design process need 6 to 9 months.

The biggest time sinks are rarely development but unclear requirements, missing product data and late decisions on system architecture. That's why we start every online shop relaunch with a strategy phase where platform choice, data mapping and migration plan are settled before the first line of code is written. That saves more time in the end than it costs at the start.