Why 2026 Is the Year to Replatform to Adobe Commerce

Legacy ecommerce platforms are accumulating security debt, PCI compliance gaps, and performance ceilings. Here's why 2026 offers the best migration window to Adobe Commerce—and how to execute it without disrupting your business.

If your ecommerce store is still running on Magento 1, a legacy proprietary platform, or an aging version of Magento Open Source, you’re sitting on a convergence of risks that’s becoming harder to ignore. Security vulnerabilities are piling up faster than patches, PCI auditors are asking tougher questions, and your competitors on modern platforms are pulling ahead on speed, conversions, and customer experience.

2026 is the year these risks crystallize into action. Here’s why—and how to replatform to Adobe Commerce without losing momentum.

The Security Wake-Up Call: SessionReaper and Beyond

In late 2025, a critical remote code execution vulnerability—tracked as CVE-2025-54236 (opens in new tab) and dubbed “SessionReaper”—hit Magento and Adobe Commerce stores worldwide. Within hours, over 250 stores were compromised (opens in new tab). Six weeks after public disclosure, 62% of affected stores remained unpatched.

For merchants on current Adobe Commerce versions, Adobe released a security patch (SUPEE-11502 for legacy naming). But here’s the uncomfortable truth: if you’re on Magento 1, you didn’t get a patch. Magento 1 reached end-of-life in June 2020, and every day since has been a day without official security support.

SessionReaper wasn’t an isolated incident. It was a reminder that legacy platforms are static targets in an evolving threat landscape. Each unpatched vulnerability becomes a permanent entry point—one that PCI auditors, payment processors, and your customers’ browsers increasingly refuse to tolerate.

The PCI Compliance Squeeze

Five years after the Magento 1 end-of-life, PCI DSS compliance remains the most immediate operational risk (opens in new tab) for merchants on unsupported platforms. The current PCI DSS 4.0 standard requires:

• Regular vulnerability scanning of all payment-facing systems
• Compensating controls for unsupported software (expensive, complex, and increasingly difficult to justify)
• Documented evidence that your security posture meets standard requirements

For Magento 1 stores, maintaining compliance means layering expensive compensating controls on top of an inherently insecure foundation. Every PCI audit becomes a negotiation. Every scan produces findings that require documented mitigation rather than simple patches. And every new vulnerability disclosure resets the conversation with your auditor.

Replatforming to Adobe Commerce doesn’t just eliminate this friction—it transforms PCI compliance from a quarterly anxiety into a managed service. Adobe Commerce’s current versions include built-in security features, regular third-party security testing, and AI-powered threat detection through integrated web application firewalls. You shift from defending an unsupported platform to leveraging a platform that’s actively defended.

Adobe Commerce Cloud Service: The Migration Paths Just Got Better

A common barrier to replatforming has been the perceived complexity of the migration itself. Historically, moving to a new platform meant a full rebuild: exporting data, rewriting integrations, rebuilding the frontend, and hoping nothing broke in the transition.

Adobe has significantly de-risked this process with Adobe Commerce as a Cloud Service (ACCS) (opens in new tab). Launched as the next evolution of the platform, ACCS introduces:

Versionless Updates

No more major version upgrades. The platform receives continuous updates, eliminating the upgrade treadmill that has plagued Magento merchants for years. You’re always current without disruptive version migration projects.

Multiple Migration Paths

ACCS supports different migration strategies depending on your starting point, timeline, and customization level. Whether you’re moving from Magento 1, Magento Open Source, or another legacy platform entirely, there’s a structured path that meets you where you are.

API-First Architecture

Microservices and API-first design mean integrations are cleaner, more resilient, and easier to maintain. Your ERP, PIM, and OMS connections become durable integrations rather than fragile custom code.

Edge Delivery Services

Adobe’s Edge Delivery Services dramatically improve frontend performance by decoupling presentation from commerce logic. For merchants investing in conversion rate optimization, this is a foundational capability.

The Business Case: Measurable Outcomes, Not Just New Technology

Replatforming is a significant investment, and the business case needs to be concrete. Here’s what merchants typically see after migrating to Adobe Commerce:

Performance Gains

Modern Adobe Commerce deployments with Hyvä frontend consistently deliver Core Web Vitals scores that legacy platforms can’t match. Faster page loads, smoother interactions, and better mobile performance translate directly to lower bounce rates and higher engagement.

Conversion Lift

Industry benchmarks show 4–8% conversion rate improvements (opens in new tab) after migrating from legacy platforms to optimized Adobe Commerce builds. For a merchant doing $10M annually, that’s $400K–$800K in incremental revenue without spending an additional dollar on traffic.

Operational Efficiency

Native B2B capabilities—company accounts, custom catalogs, quote management, requisition lists, and approval workflows—eliminate the patchwork of extensions and workarounds that legacy B2B merchants cobble together. Your sales team spends less time managing platform limitations and more time closing deals.

Integration Depth

Adobe Commerce’s mature integration ecosystem connects cleanly with ERP systems like Epicor, NetSuite, and SAP. For B2B manufacturers and distributors where accurate pricing, inventory sync, and order routing are non-negotiable, this integration depth is the difference between a platform that works and one that requires constant manual intervention.

How AI Accelerates Your Migration

The traditional migration timeline—12 to 18 months for complex B2B implementations—is shrinking. AI-accelerated development approaches are compressing the planning, coding, and testing phases of migration projects:

• Data mapping and transformation: AI tools analyze your existing catalog structure, customer data, and order history, then generate migration scripts that account for edge cases human mappers often miss.
• Integration development: API connectors between Adobe Commerce and your ERP/PIM are generated faster with AI-assisted coding, reducing the most time-consuming phase of most migrations.
• Quality assurance: Automated testing across your migrated catalog, pricing rules, and checkout flows catches regressions before they reach production.
• Frontend acceleration: Component libraries and design systems for Hyvä can be adapted from existing designs using AI, cutting frontend build time significantly.

For merchants concerned about the disruption window, AI-accelerated delivery doesn’t just speed things up—it reduces the risk of extended parallel-running periods where you’re maintaining two platforms simultaneously.

A Migration Framework That Reduces Risk

The most successful migrations we’ve executed follow a phased approach:

Phase 1: Discovery and Architecture (Weeks 1–3)

Audit your current platform: catalog structure, custom extensions, integrations, customer data, and business rules. Map these to Adobe Commerce capabilities and identify where custom development is needed versus where native features replace workarounds.

Phase 2: Data and Integration Foundation (Weeks 4–8)

Migrate your product catalog, customer accounts, and historical data. Build and test integrations with your ERP, PIM, and payment systems in a staging environment. This is where AI-accelerated tooling delivers the biggest time savings.

Phase 3: Frontend and Experience (Weeks 6–10)

Build or adapt your storefront using Hyvä for maximum performance. Implement your design system, conversion optimization patterns, and any B2B-specific UI requirements like company account dashboards and custom pricing displays.

Phase 4: Testing and Launch (Weeks 10–12)

Comprehensive testing across your full catalog, all customer scenarios, and every integration touchpoint. Soft launch with a subset of traffic, monitor for issues, and expand to full cutover.

This compressed timeline is achievable for most B2B merchants. Complex implementations with extensive custom ERP integrations may extend to 16 weeks, but the AI-accelerated approach makes the traditional 12–18 month timeline an outlier rather than the norm.

Don’t Wait for the Next Vulnerability

The SessionReaper incident demonstrated that security vulnerabilities don’t wait for convenient timing. Every month you remain on a legacy platform is another month of accumulating risk—security risk, compliance risk, and competitive risk.

The migration tools are better than they’ve ever been. The platform capabilities—especially with ACCS and Adobe Commerce Cloud Service—address the concerns that have historically made merchants hesitant. And AI-accelerated delivery has compressed the timeline and reduced the risk profile of migration projects.

If you’ve been evaluating a move to Adobe Commerce, 2026 offers the strongest convergence of motivation, capability, and execution support we’ve seen. The question isn’t whether to replatform—it’s how quickly you can get it done.