OLTP (Online Transaction Processing)

Metadata	Value
TAM Boundary	#2 of 12
Mission	Real-time transaction processing
Key Capabilities	Authorization, card-present processing, e-commerce gateway, acquirer routing, scheme connectivity
Last Scanned	2026-01-09

Overview

The OLTP boundary handles all real-time payment transaction processing across multiple channels. This includes card-present (POS terminals via Integra), e-commerce (Datatrans/DFS), and routing to acquirers (NAS) or Planet's own acquiring platform (PSW).

Applications

Datatrans/DFS - E-commerce gateway, tokenization, 3DS, Pay-by-Link (Tier 1)
Integra FE - Card-present gateway for POS terminals
NAS - Acquirer switcher routing to Planet (PSW) or 3rd party acquirers
PSW - Core acquiring solution for card processing with scheme connectivity

Datatrans (DFS) - E-commerce Gateway

Repository Inventory

Repo	Language	Application	Description
datatrans-payment-gateway	Java	DFS	Datatrans Payment Gateway
alerting-tool	Java	DFS	Datatrans Merchant Alerting Tool
transaction-renewal	Java	DFS	Datatrans Transaction Renewal for subscriptions
uppadmin-backend	Java	DFS	Spring Boot backend for UPP Admin
pci-proxy	Java	DFS	PCI Proxy tokenization service
payflow	Java	DFS	Payment orchestration
commercetools-planet-integration	TypeScript	DFS	Commercetools connector
token-vault	Java	DFS	PCI Proxy Token Service
pgid-token	Java	DFS	Token Service application
TokenService	C#	DFS	Token service (.NET)
3CTOKENDB	TSQL	DFS	Gateway Token Service database

DFS Architecture Notes

Heavy external API integrations: Apple Pay, Visa CTP, Mastercard CTP, Vipps, MobilePay, Twint
UPP database contains 77+ JPA entities
Synchronous REST communication pattern (no Kafka)
Zuora integration for PCI Proxy usage-based billing

PSW (Planet Switch) - Acquiring Platform

Repository Inventory

Repo	Language	Application	Description
PlanetSwitch	C#	PSW	Main monolith - core acquiring solution
psw-transaction-orchestrator-service	C#	PSW	PoC for microservices decomposition
psw-inbound-iso8583-service	C#	PSW	ISO8583 inbound service
psw-outbound-visa-service	C#	PSW	Visa outbound service
psw-batch-processor-service	C#	PSW	Batch processing service
psw-database-dacpac	-	PSW	Database DACPAC
psw-cryptography-package	C#	PSW	Cryptographic operations
psw-cache-package	C#	PSW	PSW cache package
3CAUTHDB	TSQL	PSW	Gateway switch database

PSW Architecture Notes

.NET monolith with 200+ projects, microservices PoC in progress
Supports all major schemes: Visa, MasterCard, Amex, Discover, JCB, Diners, UnionPay
Three main databases: PPTables (config), Switch (core), Transactions (logs)
Kafka producer for SchemeResponded events to Data Platform
HSM integration: Thales, SafeNet, Atalla, CipherTrust

NAS (Network Access Switch) - Acquirer Router

Repository Inventory

Repo	Language	Application	Description
nas	Java	NAS	NAS authorization server
PGAS_NAS	Shell	NAS	Authorization server that routes to acquirers
PGAS_NAS_auth-core	Java	NAS	Core authorization logic
PGAS_NASAdminTool	Java	NAS	NAS configuration tool
PGAS_NASConverterTool	Java	NAS	ISO 8583 message converter
PGAS_NASAcquirerSimulator	Java	NAS	Acquirer simulator for testing
PGAS_ServiceManager	Java	NAS	Interface management
integra-proxy	Java	NAS	Content-based routing for OPI

NAS Architecture Notes

65+ processor modules for global acquirer connectivity
Naming convention: proc-{currency}{identifier} (e.g., proc-usdfd, proc-gbpax)
Protocols: ISO 8583 (CCC 3C variant), GICC/GICCx, Nexo XML
Connection types: HTTPS, raw sockets (TNS), Apache MINA
Oracle database for transaction logging and configuration

Integra FE - Card-Present Gateway

Repository Inventory

Repo	Language	Application	Description
integra-fe	Java	Integra FE	Card-present gateway
pgid-integrafe	Java	Integra FE	Integra FE main application
pgid-keyvault	Java	Integra FE	Key management
pgid-decryption	Java	Integra FE	Card data decryption
pgid-gatekeeper	Java	Integra FE	Access control
3CINTEGRADB	TSQL	Integra FE	Gateway Integra database
3CDB	TSQL	Integra FE	Gateway configuration database
integrafe-rabbitmq	-	Integra FE	RabbitMQ deployment
argocd-pgid-integrafe	-	Integra FE	ArgoCD manifests

Integra Architecture Notes

Terminal protocols: ISO 8583, Nexo/ns3cXml, OPI
Routes to: NAS (3rd party acquirers), PSW (Planet acquiring), DGW (APMs)
Databases: 3CDB (config), 3CINTEGRADB (integra), 3CTOKENDB (tokens), 3CDCCDB (DCC)
RabbitMQ for async terminal communication

Cross-Cutting Architecture Notes

Transaction Flow

POS Terminal → Integra FE → NAS → PSW/3rd Party Acquirer → Card Scheme
                    │
E-commerce → Datatrans → PSW → Card Scheme

Data Flow to Analytics

All systems publish events to Kafka for consumption by Data Platform (Flink workers → Snowflake)

Technology Summary

System	Language	Database	Message Broker
Datatrans	Java	MySQL/PostgreSQL	-
PSW	C# (.NET)	SQL Server	Kafka
NAS	Java	Oracle	-
Integra FE	Java	SQL Server	RabbitMQ