Operator context
Longer answer
Cart2Cart and LitExtension are the two dominant automated migration platforms for Shopify. Both support all the major source platforms (Magento, WooCommerce, BigCommerce, Adobe Commerce, Salesforce Commerce Cloud as supported source). Both handle catalog, customer, and recent order migration through wizard-driven interfaces. Output quality is comparable for standard migration scope.
The differentiator is the engagement model. Cart2Cart's primary offering is self-service — operators run the wizard themselves with vendor support during issues. LitExtension offers both self-service and a managed-service tier where the vendor team runs the migration on behalf of the brand. The managed-service tier matters most for brands without in-house Shopify developers.
At the $5M+ brand size, neither tool is the whole answer. Above 10K SKUs or with custom field counts beyond platform defaults, both pair with Matrixify for the field-level reconciliation that wizards do not handle. Plan the toolchain (automated platform + Matrixify) rather than picking a single tool.
The actual decision criteria operators use: which vendor has the live operator the brand can reach during cutover weekend, which agency network the brand is plugged into, and which vendor has recent references at the brand size. Get quotes from both, ask for recent references at your revenue tier, pick by the reference quality and the support model fit.