A typical eCommerce migration takes 6–16 weeks, depending on complexity. Simple lift-and-shift projects can be completed in 6–8 weeks, while larger migrations involving complex data, integrations, internationalisation, or B2B requirements usually take 10–16 weeks. In practice, timelines are driven less by build speed and more by planning quality, data readiness, project complexity and how quickly decisions are made.

A typical eCom migration usually costs £15k–£150k+, depending on scope and complexity. Smaller lift-and-shift migrations with clean data and limited integrations tend to sit at the lower end, while larger projects involving complex data, custom integrations, international markets, or B2B requirements quickly move higher. The biggest cost drivers are planning depth, data complexity, and the number of systems involved. Well-scoped migrations often deliver better ROI by avoiding rework and post-launch fixes.

Yes, Shopify can handle complex B2B and multi-market setups when configured correctly. This can range from relatively quick deployment via off the shelf apps like Sparklayer right through to bespoke solutions using the native B2B API. For complex commerce, Shopify’s strength lies in combining a stable core platform with integrations and selective customisation, rather than heavy bespoke builds, making it well suited to scale without the operational drag of legacy platforms.

In most cases, a Shopify migration does not need to disrupt day-to-day operations if it’s planned and executed properly. The new store is typically built and tested in parallel with the existing site, allowing teams to continue trading as normal until launch. Any short-term disruption is usually limited to launch day and can be minimised with phased rollouts, clear ownership, and thorough testing, making the transition largely invisible to customers and internal teams.

Not necessarily. In most Shopify migrations, your existing ERP or warehouse system can remain in place, with Shopify integrated into it rather than replacing it. The migration is typically focused on the commerce layer (storefront, checkout, and admin), while downstream systems continue to handle stock, fulfilment, accounting, and logistics as they do today. Changes are only usually required if the current system is limiting growth, poorly integrated, or costly to maintain, in which case migration can be a good moment to simplify or modernise.

You avoid SEO loss during a migration by treating SEO as a core workstream, not a post-launch fix. This means benchmarking current performance, preserving high-value URLs, implementing precise 1:1 redirects, and maintaining metadata, internal linking, and tracking through the transition. When the new site is built and tested in parallel, launched with redirects and monitoring in place, and actively watched in the weeks after go-live, most migrations retain, and often improve, organic performance rather than lose it.