EventFlow Infrastructure

Infrastructure as Code (Bicep) for the EventFlow event-driven architecture demo on Azure.

Architecture

┌─────────────────┐     ┌──────────────┐     ┌─────────────────────┐
│  Order Service   │────▶│ Service Bus  │────▶│  Payment Service    │
│ (Container App)  │     │   (Queue)    │     │  (Container App)    │
└────────┬────────┘     └──────────────┘     └────────┬────────────┘
         │                                            │
         ▼                                            ▼
┌─────────────────────────────────────────────────────────────────┐
│                    Application Insights                         │
│                    Log Analytics Workspace                      │
└────────────────────────────┬────────────────────────────────────┘
                             │
                             ▼
                   ┌──────────────────┐     ┌─────────────────────┐
                   │   Alert Rule     │────▶│  Azure Function     │
                   │ (error spike)    │     │ (Devin API trigger) │
                   └──────────────────┘     └─────────────────────┘

Cost Optimization

All resources use the cheapest tier suitable for demos:

Resource	SKU/Tier	Estimated Monthly Cost
Container Apps Environment	Consumption (serverless)	~$0 (pay-per-request)
Container Apps (×2)	Consumption	~$0 at demo traffic
Azure Service Bus	Basic	~$0.05/million ops
Log Analytics Workspace	Pay-as-you-go (5GB free)	$0
Application Insights	Pay-as-you-go (5GB free)	$0
Container Registry	Basic	~$5/month
Azure Functions	Consumption	$0 (1M free executions)
Total		< $10/month

Prerequisites

• Azure CLI 2.50+
• Bicep CLI (included with Azure CLI)
• An Azure subscription with Contributor access

Deployment

# Login to Azure
az login

# Deploy the infrastructure
./scripts/deploy.sh

# Or deploy manually
az deployment group create \
  --resource-group rg-eventflow-demo \
  --template-file main.bicep \
  --parameters parameters/dev.bicepparam

Teardown

# Remove all resources
./scripts/teardown.sh

# Or manually
az group delete --name rg-eventflow-demo --yes --no-wait

Modules

Module	Description
modules/container-registry.bicep	Azure Container Registry (Basic tier)
modules/service-bus.bicep	Azure Service Bus namespace + queue
modules/monitoring.bicep	Log Analytics + Application Insights
modules/container-apps.bicep	Container Apps Environment + both services
modules/alerts.bicep	Alert rules + action group for Devin trigger
modules/function-app.bicep	Azure Function for alert webhook → Devin API

Parameters

• parameters/dev.bicepparam — Development/demo environment (minimal resources)
• parameters/prod.bicepparam — Production example (higher limits, redundancy)

Post-Deployment

After deploying infrastructure, you need to:

1. Build and push container images to the Container Registry
2. Update Container Apps with the image references
3. Set the Service Bus connection string in each service's environment
4. Configure the Devin API key in the Azure Function's app settings