Web App System Integration Diagram

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About This Architecture

Multi-layer web app architecture with Customer and Company pages sharing a unified GET /get_comp API endpoint. The backend API layer orchestrates requests to three database tables (customer, address, comp) via foreign key relationships, while GET /get_customer additionally calls external third-party APIs and SMS services. This design demonstrates API reuse and separation of concerns across frontend, backend, and data layers. Fork and customize this diagram on Diagrams.so to model your own multi-tenant or multi-page system with shared endpoints. The shared API pattern reduces code duplication and simplifies maintenance across related features.

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How do I design a web app where multiple pages share the same API endpoint while maintaining separate data flows?

This diagram shows a shared API pattern where Customer and Company pages both call GET /get_comp, reducing duplication. The backend layer separates concerns: GET /get_customer handles customer-specific logic including external API calls and SMS notifications, while GET /get_comp serves shared company data. Database foreign keys link customer records to companies and addresses, ensuring referential

Web App System Integration Diagram

Autointermediateweb-app-architectureshared-api-patternbackend-designdatabase-relationshipsexternal-integrationsmulti-layer-system
Domain: Software ArchitectureAudience: Full-stack developers and backend engineers designing multi-page web applications with shared APIs and external service
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Created by

March 26, 2026

Updated

March 26, 2026 at 4:29 AM

Type

er

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