Knowledge Base
Short explainers for payment gateway, issuing, website screening, eKYC, EMV 3DS, ACS, and disputes.
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Knowledge Hub brings together evergreen explainers, common questions, and selected service perspectives.
Short explainers for payment gateway, issuing, website screening, eKYC, EMV 3DS, ACS, and disputes.
Explore Knowledge Base →Answers to commercial, service-scope, regulatory-scope, and cooperation questions.
Read FAQ →Selected perspectives and service notes without a high-frequency news model.
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A gateway helps route and manage online payment transaction workflows.
A gateway helps route and manage online payment transaction workflows. The practical scope depends on business model, applicable rules, and service configuration.
Related service →An issuing platform supports card program and cardholder operations workflows.
An issuing platform supports card program and cardholder operations workflows. The practical scope depends on business model, applicable rules, and service configuration.
Related service →Website screening reviews merchant websites for risk indicators relevant to payment operations.
Website screening reviews merchant websites for risk indicators relevant to payment operations. The practical scope depends on business model, applicable rules, and service configuration.
Related service →eKYC supports digital onboarding and business review workflows for onboarding.
eKYC supports digital onboarding and business review workflows for onboarding. The practical scope depends on business model, applicable rules, and service configuration.
Related service →EMV 3DS supports authentication of online card-not-present transactions.
EMV 3DS supports authentication of online card-not-present transactions. The practical scope depends on business model, applicable rules, and service configuration.
Related service →ACS supports issuer-side cardholder authentication within 3DS workflows.
ACS supports issuer-side cardholder authentication within 3DS workflows. The practical scope depends on business model, applicable rules, and service configuration.
Related service →A comparison of transaction-authentication workflow and issuer-side authentication roles.
A comparison of transaction-authentication workflow and issuer-side authentication roles. The practical scope depends on business model, applicable rules, and service configuration.
Related service →Dispute resolution supports post-transaction case, evidence, and chargeback workflows.
Dispute resolution supports post-transaction case, evidence, and chargeback workflows. The practical scope depends on business model, applicable rules, and service configuration.
Related service →Next step
Contact Vellfi for a focused discussion about payment, issuing, authentication, onboarding review, or dispute service needs.
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