How to migrate Magento Open Source or Adobe Commerce to Mage-OS?

Migrate when the operation does not depend on Adobe-exclusive features, the team or partner can sustain patches and security, and the Adobe license is material to TCO. In that profile, Mage-OS removes the license line while keeping Magento know-how and most of the stack.

Do not migrate when ACCS, Adobe's commercial SLA, native B2B, Live Search / Recommendations (Sensei), content staging, or other paid capabilities deliver used value. In those cases, staying on Adobe Commerce — or upgrading the current line — usually beats a distribution switch. For the business decision and the three-way matrix, read Is Mage-OS worth it? and the Adobe Commerce vs Magento Open Source vs Mage-OS comparison.

What stays: catalog, orders, customers, and most Magento 2 extensions and themes; the team's Magento knowledge transfers. Because Mage-OS is upstream-compatible, the migration is a distribution change, not a platform rewrite.

What changes: Composer packages point at the Mage-OS repository (repo.mage-os.org / mirror.mage-os.org); Mage-OS-specific features and Lab add-ons become available; if the source is Adobe Commerce, Adobe exclusives leave the stack and must be rebuilt, replaced, or dropped.

Treat the checklist as a go/no-go gate before staging work. Version ≥ 2.4.8 is the ideal baseline for the official migration script; Mage-OS 3.x expects PHP 8.3+ (preference for 8.4/8.5). Inventory Adobe-only extensions early — that list drives Commerce→Mage-OS effort more than the Composer swap itself.

On Magento Open Source 2.4.8+, the official Mage-OS migration script is the standard path. In a direct case (compatible version, no blocking Adobe-only packages), the Composer cutover often lands in about 30 minutes and remains reversible if you keep the previous lock and backup.

Typical flow: point Composer at repo.mage-os.org (or the public mirror), run the official migration steps in developer mode on staging, execute the QA plan, then cut over production. Operational command detail follows the Mage-OS Migration Guide and your partner's runbook — this guide describes the flow, not every CLI flag.

Think of Commerce → Mage-OS like Commerce → Open Source: data stays intact; the paid Adobe layer does not. You lose native B2B, Live Search and Product Recommendations (Sensei), Commerce Intelligence, content staging, customer segments, gift cards, and the Adobe support/SLA channel.

The real cost is recreating what you actually use versus the license savings. Extensions or SaaS replacements (search, B2B workflows, staging) can erase part of the TCO win. Adobe Commerce as a Cloud Service (ACCS) is a different profile — managed multi-tenant SaaS — and is not a Composer swap; treat it as a separate exit/architecture decision, not the same path as on-prem or Cloud PaaS.

After cutover, validate that patches follow the Mage-OS cadence and that the operation stays on the latest supported branch — Mage-OS supports only the latest branch. Optionally enable Mage-OS Lab add-ons (PCI DSS 4.0 hardening, AI translation, theme optimization, async events) when they map to real requirements.

Frontend choice (Hyvä vs Luma) is independent of the distribution label. Observability, release QA, and an explicit patch window stay on the P&L: open source removes the Adobe license line, not operational ownership.

Magecore does not treat a distribution migration as the default. The Precision Assessment compares 12-month scenarios — maintain/optimize, version upgrade on the current line, Magento Open Source, Mage-OS, or another platform when scale does not fit the ecosystem — and recommends the path with numbers.

If Magento Open Source or Adobe Commerce to Mage-OS is the right move, the assessment scopes feature gaps, sustainment capacity, and cutover risk before Composer work starts. Schedule a free diagnostic to decide with P&L, not with migration folklore.