Three-Tier Web App on Azure with Terraform

A robust deployment stack built for scale, security, and simplicity:

Modern three-layer structure

• Frontend: Node.js/Express web app

• Backend: Go REST API with monitoring

• Data store: PostgreSQL database

Fully containerized development

Run the app locally via Docker Compose. Frontend (port 3000), backend (8080), and PostgreSQL (5432) launch in one command.

Terraform-powered Azure infrastructure

• Scalable VM Scale Sets for both tiers

• Secure perimeter via Application Gateway with WAF

• Private and public subnets across two availability zones

• Managed PostgreSQL with primary and replica for resilience

Secure dev-to-cloud workflow

• Secrets stored in Azure Key Vault

• Docker images served from Docker Hub

• SSH via Bastion only

• Private DNS & network security gating every layer