Sessions Flow
Simplified backend. Checkout SDK handles 3DS and orchestration.
When you want to minimise custom backend logic.
Pick a flow and an integration type, or generate a Pay by Link with the selected country.
Advanced Flow
Full control: you call /paymentMethods,
/payments, /payments/details.
When you need custom routing, risk logic or advanced UX.
API-only (encrypted cards)
Custom UI with Adyen secured fields (encrypted card data) + 3DS in modal.
For PCI-friendly custom card forms (no raw PAN on your frontend).
Unscheduled Payments
Charge a stored card without shopper interaction using a tokenised payment instrument.
Perfect for subscriptions, retries, or post-authorization operations.
Pay by Link
Create a payment link via API using the selected country & locale.
Ideal for invoices, remote payments, or quick back-office tests.