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These concepts underpin how Grand Central works. Use them when you implement and operate the platform.

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Core architecture components

Connectors

Pre-built integrations that connect Grand Central to banking systems, third-party services, and APIs

Unified APIs

Standardized interfaces that abstract complex banking operations into consistent endpoints

Domains

Logical groupings of related banking capabilities like payments, accounts, lending, and compliance

Data orchestration

Real-time data flow management between different systems and services

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Integration patterns

Grand Central implements proven integration patterns for banking data orchestration.

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Event-driven architecture

Grand Central uses event-driven patterns to ensure real-time data synchronization across your banking ecosystem. The following diagram shows how data flows from your core banking system through Grand Central to various channels:

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API gateway pattern

All external integrations flow through Grand Central’s unified API layer, providing:
  • Consistent authentication across all services
  • Rate limiting and throttling controls
  • Request/response transformation for legacy systems
  • Comprehensive logging and audit trails

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Banking domains

Handles all payment-related operations including transfers, bill payments, and international remittances.Key features:
  • Real-time payment processing
  • Multi-currency support
  • Fraud detection integration
  • Regulatory compliance (PSD2, Open Banking)
Manages customer accounts, balances, and transaction history across multiple core banking systems.Key features:
  • Account aggregation
  • Real-time balance updates
  • Transaction categorization
  • Multi-bank support
Provides secure authentication, authorization, and customer identity management.Key features:
  • SSO integration
  • Multi-factor authentication
  • Identity verification
  • Compliance reporting
Supports loan origination, credit scoring, and lending workflow automation.Key features:
  • Credit bureau integration
  • Automated underwriting
  • Document processing
  • Regulatory reporting

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Data flow principles

All integrations follow consistent principles for data handling.

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Consistency

All data transformations follow consistent patterns regardless of the source or destination system.

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Reliability

Built-in retry mechanisms, dead letter queues, and circuit breakers ensure reliable data delivery.

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Scalability

Horizontal scaling capabilities handle increasing transaction volumes and system loads.

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Security

End-to-end encryption, audit logging, and compliance controls protect sensitive banking data.
Ready to implement these concepts? Follow our quickstart guide to deploy your first connector.