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API-led and event-driven integration

Reusable APIs and an event bus that connect ERP, CRM, finance and HR systems without point-to-point spaghetti.

Solution blueprint ยท APIs and integration

The challenge

Every new connection between systems is a custom script. When one system changes, several integrations break, and nobody knows which.

Our approach

We expose each system of record through a system API, publish business events to an event bus, orchestrate workflows in process APIs, and serve each channel through experience APIs, all managed behind an API gateway.

Architecture

How the pieces fit together. Scroll sideways on small screens.

Systems of recordERPCRMFinance and billingHR and payrollSystem APIsOne per systemHide complexityReusableEvent busKafka / Service BusEventBridgePublish onceProcess APIsOrder to cashClient onboardingInvoice approvalExperience APIsWeb and mobilePartnersInternal toolsChannelsCustomer portalMobile appPartner systemsAPI gateway and management: security, throttling, keys, analytics, developer portal

Key components

  • API gateway and management with a developer portal
  • System, process and experience API layers
  • Kafka, Azure Service Bus or Amazon EventBridge
  • OpenAPI specifications and contract tests
  • Monitoring, retries and dead-letter handling

What you can expect

  • New integrations delivered faster by reusing APIs
  • Changes in one system no longer break others
  • Real-time events across the business
  • Security and usage visible in one place

How we deliver it

  1. Assess

    Review current systems, data and goals, and agree success measures.

  2. Design

    Target architecture, security model, plan and fixed quote.

  3. Build and test

    Agile sprints with demos, automated tests and documentation.

  4. Launch and support

    Production rollout, knowledge transfer and optional managed support.

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