> ## Documentation Index > Fetch the complete documentation index at: https://docs.finhub.cloud/llms.txt > Use this file to discover all available pages before exploring further. # Platform as a Service (PaaS) > System-to-system integration via connectors # Platform as a Service (PaaS) FinHub PaaS provides system-to-system integration capabilities for organizations with existing financial infrastructure. ## What is PaaS? Unlike BaaS which provides complete business processes, PaaS offers **connectors** that enable your existing systems to integrate with financial networks, payment rails, and third-party services. ## Key Differences from BaaS | Aspect | BaaS | PaaS | | ------------ | ------------------------ | ----------------------- | | **Focus** | Business processes | System connectivity | | **Target** | End-user services | Backend integration | | **Approach** | Microservices | Connectors | | **UI** | Optional (CoreX) | None | | **Use Case** | Build financial products | Extend existing systems | ## PaaS Connectors FinHub PaaS provides connectors for: SEPA, SWIFT, local schemes Visa, Mastercard, schemes Identity verification services Correspondent banking ## When to Choose PaaS PaaS is ideal if you: * Have existing core banking systems * Need to connect to specific payment rails * Want to add capabilities to current infrastructure * Require system-to-system integration * Don't need end-user interfaces ## Architecture ``` ┌─────────────────────────────────────────────────────────────────┐ │ Your Existing Systems │ │ (Core Banking, ERP, CRM, Custom Applications) │ └───────────────────────────────┬─────────────────────────────────┘ │ │ REST APIs / Webhooks │ ┌───────────────────────────────▼─────────────────────────────────┐ │ FinHub PaaS │ │ ┌─────────────────────────────────────────────────────────┐ │ │ │ Connector Layer │ │ │ │ ┌─────────┐ ┌─────────┐ ┌─────────┐ ┌─────────────────┐│ │ │ │ │ Banking │ │Acquiring│ │ KYC/KYB │ │ Communication ││ │ │ │ │Networks │ │ & IPG │ │ │ │ ││ │ │ │ └─────────┘ └─────────┘ └─────────┘ └─────────────────┘│ │ │ │ ┌─────────────────────┐ ┌─────────────────────────────┐│ │ │ │ │ Crypto │ │ Additional Connectors ││ │ │ │ └─────────────────────┘ └─────────────────────────────┘│ │ │ └─────────────────────────────────────────────────────────┘ │ └───────────────────────────────┬─────────────────────────────────┘ │ ┌───────────┬───────────┼───────────┬───────────┐ ▼ ▼ ▼ ▼ ▼ ┌─────────┐ ┌─────────┐ ┌─────────┐ ┌─────────┐ ┌─────────┐ │ SEPA │ │ SWIFT │ │ Card │ │ KYC │ │ SMS │ │ Network │ │ Network │ │ Schemes │ │Providers│ │ Email │ └─────────┘ └─────────┘ └─────────┘ └─────────┘ └─────────┘ ``` ## Next Steps Explore available connectors Integration guide