What about my custom checkout and payment integration?
Categories:
Magento 1 → 2 Migration
M2 has a completely different checkout (KnockoutJS-based, multi-step or 1-page via Hyvä Checkout) so a custom M1 checkout flow needs to be rebuilt. Process:
- Document the M1 flow — every step, validation rule, payment gateway, business rule.
- Map to M2 checkout architecture — vanilla M2, Hyvä Checkout, or custom UI components. Hyvä is usually cheaper and faster.
- Gateway re-integration — Stripe, Adyen, Braintree, PayPal, Authorize.net, Razorpay, Klarna, Mollie all have native M2 modules. Stored payment tokens carry over where the gateway supports it (most do).
Recurring subscriptions, gift-card balances, and store credit all preserved. Three test transactions per gateway in staging before cutover.
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