9 docs tagged with "integration"

3DS 2.x cardholder authentication — frictionless vs challenge, device_info, SDK DDC, validation, and ECI values explained for beginners.

Hosted checkout at pay.a55.tech — redirect buyers after server-side charge creation, fully managed by A55.

Visa Data Only and Mastercard Identity Check Insights — share enriched transaction data through 3DS rails without a cardholder challenge. Up to +646 basis points approval rate improvement.

Direct API integration — server-to-server charges with full control over retries, idempotency, 3DS, and error handling.

H2H, SDK, and Checkout Page: choose an integration model by control level, time to market, UX flexibility, and 3DS handling. Includes decision tree, comparison matrix, and responsibility breakdown.

Charge with network token DPAN and cryptogram — external tokenization and 3DS metadata.

Create shareable checkout URLs via API — invoices, assisted sales, and lightweight storefronts.

Legacy A55Pay.pay() integration — maintained for existing merchants; migrate to SDK V2.

A55Pay JavaScript SDK V2 — browser-side card capture, built-in DDC and 3DS, secure card handling, and event callbacks explained for beginners.