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Quick answer

How long does a Shopify migration take?

Fourteen to twenty-six weeks end-to-end for $5M-$50M DTC brands replatforming onto Shopify Plus. Enterprise brands ($50M+) take twenty-six to fifty-two weeks. The timeline includes two to four weeks of discovery, eight to sixteen weeks of build, and four to eight weeks of post-launch stabilisation.

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Short answer

Fourteen to twenty-six weeks end-to-end for $5M-$50M DTC brands replatforming onto Shopify Plus. Enterprise brands ($50M+) take twenty-six to fifty-two weeks. The timeline includes two to four weeks of discovery, eight to sixteen weeks of build, and four to eight weeks of post-launch stabilisation.

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Longer answer

The timeline varies primarily by brand size, source platform, and complexity. A clean $5M B2C migration from WooCommerce with under 5K SKUs and no subscriptions can finish in 14 weeks. A $40M Magento brand with B2B, subscriptions, and 20K SKUs typically takes 22-26 weeks. The variance is real and worth respecting when scoping.

Discovery typically runs two to four weeks before any code is written. The deliverables are a redirect map, a data dictionary, an app re-implementation plan, and a go-live runbook. Brands that compress discovery to a single week consistently pay later in reconciliation work or post-launch incidents that reset the timeline.

The build phase runs eight to sixteen weeks for the $5M-$50M cohort. Data migration, theme rebuild, app re-implementation, and SEO migration audit all happen in parallel during build. Most timeline slippage in this phase comes from custom-field reconciliation surfacing complexity that discovery missed.

Post-launch stabilisation runs four to eight weeks. The discipline of monitoring 404s, closing redirect-map gaps, and resolving customer-service tickets from app-flow changes determines whether the migration is actually complete. Brands that treat launch as the endpoint consistently see worse outcomes than brands that scope stabilisation into the engagement.