Adobe Commerce Migration Guide: Every Path, Cost & Timeline for 2026

A wholesale distributor with 18,000 SKUs finally hits the ceiling. Their Shopify Plus store can’t support customer-specific pricing tiers, their ERP integration relies on third-party middleware that breaks monthly, and their sales team manually adjusts quotes because the platform can’t handle their actual sales process.

This plays out constantly: the platform that got a business to $10M or $20M in revenue often can’t support what comes next without workarounds that consume engineering time, degrade customer experience, and create operational risk.

Adobe Commerce (formerly Magento 2 Commerce) is built for that complexity: custom pricing per customer group, flexible multi-store catalog management, deep ERP connectivity, and the ability to handle hundreds of thousands of SKUs without the performance degradation that plagues lighter platforms.

But the migration itself is where projects succeed or fail. Budgets overrun. SEO rankings collapse. Integration issues surface post-launch. Data arrives corrupted. A 6-month project becomes a 14-month recovery effort.

This guide covers what decision-makers need to know before approving an Adobe Commerce migration project.

What is an Adobe Commerce Migration?

An Adobe Commerce migration is the process of moving your e-commerce operation from a current platform to Adobe Commerce Cloud or Adobe Commerce (self-hosted). That includes your product catalog, customer accounts, order history, CMS content, pricing rules, integrations, and custom functionality.

Most mid-market projects underestimate how much custom functionality is actually required. Legacy platforms accumulate undocumented custom logic, and discovery almost always surfaces integration behaviors that someone built years ago and never mentioned.

If you are evaluating whether migration is the right move, Loomis Guild’s Adobe Commerce Migration Services can help you assess scope before you commit to a budget.

When Should You Migrate to Adobe Commerce?

Most businesses decide to migrate too late, waiting until workarounds become unbearable and then rushing a migration that compounds the problems.

These are the signals that migration deserves serious evaluation:

Your sales team is manually managing complexity the platform should handle: building spreadsheets for customer-specific pricing because the platform can’t do it natively. That operational cost is already significant.

You’re running 20+ third-party apps or plugins to replicate functionality that should be built in. Each one is a point of failure, a maintenance cost, and a performance liability.

Your catalog management requires multiple systems because your platform can’t handle your SKU volume or structure. Adobe Commerce development natively handles complex product types, configurable products with hundreds of variants, and tiered attribute sets that most platforms can’t support without significant workarounds.

You’re preparing to expand internationally or add storefronts under one operational umbrella. Adobe Commerce’s multi-store architecture, managing storefronts, currencies, and locales from a single admin instance, is built for exactly this.

Your development team spends more time maintaining platform stability than building features, a sign technical debt has reached the point where migration is cheaper than continued investment in the existing system.

Adobe Commerce Migration Costs in 2026

This is the section most decision-makers need, and most vendors obscure. Here are realistic ranges based on actual project complexity.

Licensing: Adobe Commerce Cloud starts around $22,000/year for smaller operations and scales with gross merchandise volume; on-premise follows a similar structure. This is separate from implementation cost and is non-negotiable.

Discovery and architecture: $5,000 to $25,000. This phase defines the entire project. Skip or underfund it, and you pay later through scope changes, integration failures, and missed requirements. A disciplined discovery documents current-state logic, identifies integration requirements, and produces an architecture the team actually builds to.

Design and UX: $15,000 to $60,000, depending on whether you’re redesigning the customer experience or preserving the existing design. Adobe Commerce’s theming layer (Luma or Hyva) requires frontend investment either way.

Development: $40,000 to $150,000+, the largest cost variable. Drivers include custom module development, third-party extensions requiring configuration or replacement, checkout customization, and catalog complexity.

Integrations: $15,000 to $80,000. ERP, OMS, WMS, PIM, CRM, and marketing integrations each carry their own complexity, and businesses that underestimate the scope discover it post-launch when order management breaks or inventory sync fails. Loomis Guild’s Integration & Automation services are built around these high-risk connection points.

Data migration: $5,000 to $30,000. Product data, customer accounts, order history, and CMS content all require migration scripts, validation testing, and often multiple runs. Migrating 50,000 orders is fundamentally different from migrating 5 million.

SEO migration: $5,000 to $20,000. This should be its own line item: redirect mapping, metadata migration, structured data implementation, and pre-launch crawlability testing aren’t optional if organic search matters to you.

QA and testing: $8,000 to $30,000. Underfunding QA is one of the most reliable ways to guarantee a difficult launch. Functional, integration, performance, and user acceptance testing all need dedicated time and budget.

Training and documentation: $3,000 to $10,000. Adobe Commerce’s admin interface is capable but complex; untrained teams make configuration errors affecting catalog, pricing, and promotions for months after launch.

Post-launch support: $2,000 to $10,000/month for the first 90 days. Launches surface issues testing didn’t catch, and a support retainer in place prevents those issues from becoming revenue events.

Total realistic ranges: Small to mid-market migrations typically land between $80,000 and $180,000 all-in. Enterprise migrations with complex integrations and large catalogs frequently exceed $250,000 before ongoing licensing and support costs.

What drives costs up: undocumented legacy integrations, large order history migration, complex B2B module configuration, multi-store builds, and significant custom development requirements.

What keeps costs down: well-documented current-state systems, standard integrations with established connectors, modest catalog size, and a decision-making process that avoids mid-project scope changes.

Adobe Commerce Migration Timeline

Discovery (2-6 weeks): requirements documentation, integration mapping, current-state audit, architecture planning, and data assessment. Rushing this phase extends the overall timeline: every hour spent here prevents four hours of unplanned development.

Design (3-8 weeks): UX design, design system definition, and stakeholder review cycles, usually concurrent with early development setup.

Development (8-20 weeks): theme development, extension configuration, custom modules, and integration builds. Duration is determined almost entirely by integration complexity and the custom functionality required.

Data migration prep (3-6 weeks, concurrent with development): writing migration scripts, mapping field relationships, running test migrations, and validating data quality. It runs in parallel with development but needs dedicated resources.

Testing (3-6 weeks): functional QA, integration testing, performance testing, SEO technical audit, and user acceptance testing. This phase consistently gets compressed under schedule pressure, which is why most launch problems are actually testing failures.

Launch and stabilization (2-4 weeks): final data migration run, DNS cutover, monitoring, and immediate post-launch support.

Why do some projects take 3 months: small catalogs, no ERP integration, minimal custom development, and a team that has done this specific migration path before.

Why some take 12 months: ERP integrations requiring middleware builds, catalogs with hundreds of thousands of SKUs and complex attribute structures, multi-store builds across markets, and approval processes that introduce delays at every gate.

The single most reliable predictor of timeline overrun is underestimated integration scope. Merchants rarely grasp how complex their ERP connectivity really is until a developer tries to map it.

Adobe Commerce Data Migration: What Actually Moves?

Understanding what migrates automatically and what requires manual effort prevents false assumptions about launch readiness.

Products and catalog structure: products, categories, attributes, and attribute sets migrate via script. Configurable products with custom attribute logic need careful mapping, and products with files, videos, or custom options need additional handling.

Customers: accounts, addresses, and passwords migrate, but passwords are hashed differently across platforms. Customers on some platforms will need to reset theirs after migration, so communicate this proactively.

Orders: order history migrates but often with reduced fidelity. Order statuses, custom fields from previous extensions, and payment details sometimes can’t be mapped directly, so audit what fidelity your customer service workflows actually need.

Pricing and customer groups: tier pricing, group pricing, and special prices migrate. Adobe Commerce’s B2B structures, shared catalogs and negotiated quotes, need to be rebuilt, since they’re new functionality, not migrated data.

CMS content: pages and blocks migrate, but platform-specific shortcodes or widget syntax often break in the new environment. Every piece needs post-migration review.

Reviews and ratings: usually migrate cleanly, but verification is required.

What does not migrate automatically: theme customizations, extension configurations, custom admin workflows, customer segments based on behavioral data, and anything that existed only in your current platform’s proprietary data structures.

SEO Risks During Adobe Commerce Migration

More organic traffic is lost to migration errors than most merchants expect. Google’s guidance on site moves is explicit: URL changes require permanent 301 redirects at scale, and getting them wrong causes ranking losses that can take months to recover from.

URL structure changes are the highest-risk element. Different platforms use different URL patterns, and a product at /products/widget-pro on Shopify can’t simply disappear at launch. Every URL receiving organic traffic needs a 301 redirect to its Adobe Commerce equivalent. Incomplete redirect maps are the most common source of post-launch traffic loss.

Metadata migration is frequently treated as optional until rankings drop. Title tags, meta descriptions, canonical tags, and Open Graph data need to migrate accurately, not be recreated from scratch. Metadata that’s accumulated SEO value over the years isn’t easily rebuilt.

Structured data often breaks during migration because product and breadcrumb schema implementations are platform-specific. Validate it with Google’s Rich Results Test as a launch checklist item, not a post-launch surprise.

Internal linking changes when URL structures change, since Adobe Commerce’s default URL generation often differs from your previous platform’s patterns. Internal links pointing to old URLs create crawl inefficiency even with redirects in place.

Crawlability during development is an overlooked risk. Misconfigured pre-launch environments have accidentally been indexed before, so verify your staging environment stays blocked from indexing throughout the build phase.

Indexation timing at launch is manageable but requires active monitoring: submit your updated sitemap to Google Search Console immediately and monitor coverage reports for crawl errors in the first 30 days, since catching redirect errors early limits their ranking impact.

Businesses that preserve SEO performance treat it as a parallel workstream throughout the project, not a final-week checklist item. Loomis Guild handles this through a dedicated SEO & Growth workstream running from discovery through post-launch monitoring.

Common Migration Mistakes That Cost Businesses Revenue

Treating discovery as optional. Every undocumented integration, custom business rule, and order-processing edge case in your current system will eventually surface. The question is whether that happens during discovery or during live operations after launch.

Migrating data without validating it. Assuming data arrived correctly is a reliable path to customer service chaos: corrupted order history, customer accounts with missing addresses, and broken product attribute relationships all create operational problems that take weeks to untangle.

Ignoring extension debt. The extension stack on a Magento Open Source or WooCommerce install represents years of accumulated decisions. Migrate without auditing which extensions are still needed, abandoned, or duplicative of native functionality, and the new platform inherits the same technical debt as the old one.

Underestimating ERP integration complexity. The ERP is where order management, inventory, pricing, and customer data actually live for most mid-market operations. A store that isn’t properly connected to it either breaks order processing at launch or requires manual reconciliation, eliminating the operational benefit of migrating at all.

Compressing testing timelines. Testing gets cut when projects run over schedule and the launch date stays fixed, which is the single most reliable way to guarantee a difficult post-launch period. A week of additional testing prevents months of firefighting.

Launching without a rollback plan. Not every launch needs to go perfectly, but every team needs a defined procedure for critical failures. Without one, downtime extends when problems happen.

Not communicating the migration to customers. Password resets, UI changes, and account experience differences need to be communicated proactively. Customers who feel blindsided by changes become support tickets.

Choosing the Right Adobe Commerce Migration Partner

The quality of your migration partner determines the outcome more than any other variable. The difference between a smooth migration and a recovery project is usually the team’s experience and methodology.

Technical depth in Adobe Commerce specifically: general e-commerce development experience doesn’t translate directly here. The module architecture, caching layer, EAV database structure, and deployment architecture all require platform-specific expertise. Ask partners for migrations they’ve executed, not just stores they’ve built.

SEO migration methodology: ask how the partner handles URL mapping, metadata migration, redirect implementation, and post-launch monitoring. A vague answer means vague work, and SEO migration should be a documented workstream with clear deliverables.

Integration experience: request specific examples of ERP and OMS integrations the team has built on Adobe Commerce. Integration failures are the most common source of post-launch revenue disruption, and that expertise isn’t evenly distributed among agencies.

Discovery process: how a partner conducts discovery reveals how they’ll execute the entire project. Thorough discovery produces accurate estimates and fewer surprises; skipping it produces low initial quotes and high final invoices.

Post-launch support model: the 90 days after launch are where migrations succeed or fail in practice. Understand exactly what post-launch support looks like, who is accountable, and what response time commitments exist.

References from comparable projects: ask for references from clients with similar catalog complexity, integration requirements, and project scale.

If you want a second opinion on a proposal you’ve already received, including for Magento Adobe Commerce migration services, Loomis Guild’s e-commerce consulting team regularly reviews migration plans and scopes for merchants before they sign.

How Loomis Guild Supports Adobe Commerce Migration Projects

Migration projects fail for predictable reasons, and most of them are avoidable with the right process.

Our discovery phase documents current-state business logic, integration dependencies, and data structures before development begins, producing an architecture the team actually builds to rather than an estimate that expands mid-project.

Data migration is treated as a parallel workstream from the start, not a task added at the end. We build migration scripts early, run test migrations against staging environments, and validate data quality before the final cutover.

SEO preservation is built into the project plan from discovery through launch. Redirect mapping begins when URL structure decisions are made, not after development is complete. We validate technical SEO before launch and monitor performance post-launch.

Integration planning addresses the ERP, OMS, and other connected systems with the specificity they require. We document integration behavior, build to that behavior, and test integration workflows against real operational scenarios before go-live.

Post-launch, we maintain an active support relationship through the stabilization period because launches always surface. Having the team that built the project respond to issues is meaningfully different from opening a ticket with a third party.

You can review our Adobe Commerce Development practice for a full overview of how we approach the platform.

That requires planning before commitment, honest cost estimation before approval, and a partner who has executed enough migrations to know where the problems hide before they surface. If you are at that point, Loomis Guild’s Adobe Commerce Migration Services are a practical next step. Get in touch with our team today.