Template: Infrastructure Diagram Template

Purpose

To provide a standardized infrastructure diagram template that visually represents environments, components, and interactions across systems.

This ensures every project has a clear, visual map of infra layers (frontend, backend, DB, services, cloud resources, monitoring).

Scope

• Applies to all new and existing projects.
• Used by Developers, DevOps, Architects, and QA.
• Covers staging, production, monitoring, and external integrations.

Diagram Conventions (Legend)

To maintain consistency, use the following symbols and shapes across all diagrams:

Example – B2B SaaS Project

• Frontend: React web app.
• Backend: Node.js microservices on AWS ECS.
• DB: PostgreSQL on AWS RDS.
• Auth: Auth0 OIDC.
• CI/CD: GitHub Actions → ECS Deploy.
• Monitoring: Datadog + CloudWatch.

Diagram flow:

User → React (CloudFront) → API Gateway → Node Services (ECS) → PostgreSQL (RDS)
                                     ↘ Stripe, Auth0, SendGrid

Example – B2C Mobile App

• Frontend: Flutter app (iOS + Android).
• Backend: Firebase Functions.
• DB: Firestore.
• Auth: Firebase Auth.
• Push Notifications: Firebase Cloud Messaging.
• Payment: Razorpay.

Diagram flow:

User → Flutter App → Firebase Functions → Firestore DB
                     ↘ Firebase Auth
                     ↘ Razorpay
                     ↘ Cloud Messaging

Blank Reusable Template

Section 1 – Project Metadata

Section 2 – Infra Layers

Section 4 – Change Log