Knowledge base

Payment and risk terms, explained simply.

Plain-language definitions of the services we offer, with links to deeper guides.

The technical connection that sends a payment from your checkout to a processor or acquirer and returns the result.

The system a card program uses to configure cards and run their lifecycle: issue, activate, freeze, replace and close.

A review of a merchant's website for risk signals, such as restricted products, missing policies or a mismatch with the declared business.

Digital identity verification during onboarding: document checks, selfie and liveness, and screening, with exceptions sent for review.

A protocol that lets the card issuer authenticate the cardholder during an online card payment, often without any extra step.

The Access Control Server is the issuer's side of 3D Secure. It assesses each request and decides between a frictionless or challenge flow.

A control layer above several payment connections that decides where each payment goes and what happens when it fails.

The workflow for chargebacks and other post-payment cases: linking notices to payments, gathering evidence and meeting deadlines.

General, educational content. Not legal, regulatory, tax, certification or implementation advice. Service scope is confirmed in a written agreement.

Have a specific question?

Ask us about your flow and we will point you to the right answer.