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Digital Payments, Acquiring, and E-commerce Glossary

Welcome to the PayOk financial dictionary. As a Payment Institution regulated by the Bank of Spain, we have developed the most comprehensive resource on the payment ecosystem and current regulations.

This space is designed for industry professionals, e-commerce executives, and compliance managers to master the essential technical vocabulary needed to manage collections successfully and securely.

Why is technical knowledge a strategic advantage?

The digital payments sector is not only moving fast, but it is also subject to strict regulation. Understanding concepts related to acquiring and payment gateways is vital to:

  • Optimize Treasury: Make informed decisions about your company's collection infrastructure.

  • Ensure Compliance: Master the implications of the PSD2 directive and anti-money laundering protocols.

  • Shield Security: Improve customer trust by implementing standards such as PCI DSS.

What will you find in our Financial Dictionary?

Technical and Regulatory Definitions

Concepts explained simply yet rigorously: from the architecture of an API or the role of the Acquiring Bank, to the technical management of Chargebacks, the EMV standard, or KYC/KYB protocols. You can also view our Payment Methods Dictionary on our YouTube channel.


Technical Concepts

Definitions, API, PSD2

Strategic Advantages

Decisions, Training

Compliance and Security

KYC, PCI DSS, GDPR