3-D Secure (3DS)

3D Secure 2

Account Information Service Provider (AISP)

Account Updater

Account-to-Account Payments (A2A)

ACH (Automated Clearing House)

Acquirer Aggregation

Acquirer API

Acquirer Optimization

Acquirer Performance Dashboard

Acquirer Redundancy

Acquirer Switching

Adaptive Authentication

Adaptive Fraud Models

Agentic Commerce

AI Governance

AI in Payments

AI Observability

AI-Driven Orchestration

Alternative Payment Methods (APMs)

AML (Anti-Money Laundering)

API Governance

API Observability

API Orchestration Layer

API Versioning

API-First Payments

Authorization API

Authorization Decline Codes

Authorization Optimisation

Authorization Rate

Automotive Payments

Backup Payment System

Behavioral Biometrics

BIN (Bank Identification Number)

BNPL (Buy Now, Pay Later)

Capture

Card Acquiring

Card Data Vaulting

Card Lifecycle Management

Card Network Integration

Card Vaulting

Card-on-File

Cascading Payments

Chargeback Analytics

Chargeback Management

Compliance Automation

Compliance-as-Code

Composable API

Composable Architecture

Composable Payments

Composable SaaS

Contextual Payments

Cross-Border Payments

CVV (Card Verification Value)

Data Enrichment

Data Lineage

Data Minimization

Data Residency

Data Sovereignty

Data Token Vault

Decision Engine

Decision Intelligence

Delegated Authentication

Developer Experience (DX)

Digital Identity Wallet

Direct Debit

Dispute

Dispute Automation

Distributed Ledger Payments

Dynamic Risk Management

Dynamic Routing

Embedded

Embedded Finance

Embedded Wallets

EMV

Encrypted Data Vault

Event-Driven Architecture

Failed Transactions

Flow Engine

Fraud Detection Engine

Fraud Intelligence

Fraud Prevention

Fraud Rule Engine

Fraud Scoring

Generative Commerce

Global Acquiring

Headless Payments

Hellgate® CPA

Identity Verification

Incident Response

Independent Sales Organization (ISO)

Intelligent Payment Routing

Interchange Fee

Interchange++

Issuer

KYC (Know Your Customer)

Latency Optimization

Least Cost Routing

Link

Load Balancing

Merchant Acquiring

Merchant Advice Code (MAC)

Merchant Category Code (MCC)

Merchant Tokenization

Micro-Kernel

Mixed Basket Payments

MOTO (Mail Order, Telephone Order)

Multi-Acquirer Setup

Multi-Acquirer Strategy

Multi-Tenant Architecture

Network Certification

Network Token

Network Token Management

Network Tokenisation

Observability in Payments

Open Banking

Operational Resilience

Orchestration Layer

Orchestration Rules Engine

P2P Payments (Peer-to-Peer)

PAN (Primary Account Number)

Pay by Link

Payment Aggregation

Payment Analytics

Payment API

Payment API Gateway

Payment Authorization

Payment Compliance

Payment Data Tokenization

Payment Decline Recovery

Payment Event Streaming

Payment Failover

Payment Fraud

Payment Gateway

Payment Gateway Abstraction

Payment Health Monitoring

Payment Hub

Payment Infrastructure

Payment Initiation Service Provider (PISP)

Payment Intelligence Layer

Payment Latency

Payment Metadata

Payment Method Aggregation

Payment Method Tokenisation

Payment Network Resilience

Payment Observability

Payment Orchestration

Payment Orchestration API

Payment Orchestration Layer

Payment Reconciliation

Payment Reliability

Payment Resilience

Payment Routing

Payment Schema

Payment Service Provider (PSP)

Payout

PCI DSS Compliance

PCI-DSS Level 1

PII (Personally Identifiable Information)

Processor API

Provider Lock-in

PSD2 Compliance

Real-Time Authorization

Real-Time Fraud Detection

Real-Time Payments

Real-Time Reporting

Real-Time Settlement

Reconciliation

Recurring Payments

Resilient Payment Architecture

Risk Orchestration

Risk Scoring Engine

Risk-Based Authentication (RBA)

Rolling Reserve

SCA (Strong Customer Authentication)

Secure Remote Commerce (SRC)

SEPA Payments

Settlement API

Settlement Reconciliation

Settlement Visibility

Smart Retry Logic

Smart Routing

Split Payments

Strong Customer Authentication

Token Extensions

Token Lifecycle Management

Token Vault

Tokenized Identity

Transaction Intelligence

Transaction Lifecycle

Transaction Monitoring

Transaction Reconciliation API

Transaction Risk Scoring

Transaction Routing Engine

Transactional Data Lake

Two-Factor Authentication (2FA)