A poorly executed Shopify migration can erase years of SEO equity, corrupt customer data, break integrations with ERP and CRM systems, and disrupt revenue for weeks. Choosing the best Shopify migration agency requires evaluating technical depth, proven process, and specialization match, not just portfolio quality and hourly rates. Each agency was assessed using publicly available data, client reviews, and service documentation. Atwix specializes in connecting eCommerce stores with Infor, NetSuite, Epicor, and SAP systems for real-time inventory sync and automated order processing. 0, with frequent mentions of technical depth and ERP expertise, though some clients note higher costs compared to agencies without enterprise specialization.