Containerized solutions:

This project was created as a hands-on practice resource for preparing for the AZ-204 exam. It demonstrates how to build, package, and deploy containerized applications using various Azure Compute services while following real-world DevOps practices. This project contains three iterations of containerized solutions with Azure Compute.

I have also added a COMMANDS.md file with relevant Azure CLI commands for Azure Containerized solutions, and a QA.md file with some exam relevant questions for containerized solutions.

Each iteration contains:

• A terraform configuration for provisioning resources on Azure.
• A small python application with necessary code / functionality for testing / verifying the provisioned resources.
• A Dockerfile for building and pushing an application image to cloud.
• A set of scripts for automatization.
• A README.md file with extra information.

First iteration overview:

• How to set up the necessary resources and in which order to create and publish a container image to Azure Container Registry.

Second iteration overview:

• Everything from First iteration.
• Instantiate an Azure Container Group (Azure Container Instance) for running the containerized application uploaded to an ACR.
• Use of environment variables through Terraform -> Application.
• How to enable basic Health and Liveness probing with Azure and in-code endpoints.

Third iteration overview:

• Everything from Second Iteration.
• How to provision and deploy an application to Azure Container Apps.
• How to configure external ingress for public access.
• How to implement HTTP-based auto-scaling rules.
• How to test and verify scaling under simulated load.
• How to Create and manage Revisions.
• How to configure traffic splitting between revisions through the Azure CLI.

Essential notes on Azure Containerized Solutions:

Azure Container Registry SKUs

Feature	Basic	Standard	Premium
Storage	10 GB	100 GB	500 GB
Webhooks	❌	✅	✅
Geo-replication	❌	❌	✅
Content trust	❌	❌	✅
Private endpoints	❌	❌	✅
Customer-managed keys	❌	❌	✅

Exam Tip: Premium is the only SKU supporting geo-replication and content trust

ACR Authentication Options

1. Admin Account (not recommended for production)

   • az acr update --admin-enabled true
   • Simple username/password

2. Service Principal (CI/CD scenarios)

   • az ad sp create-for-rbac --name myapp --role acrpush
   • Granular RBAC permissions

3. Managed Identity (recommended for Azure services)

   • System-assigned or user-assigned
   • No credential management needed

4. Repository-scoped Tokens (fine-grained access)

   • Scope to specific repositories
   • Time-limited access

Exam Tip: Know when to use each method

Azure Container Apps

• The combination of CPU and memory are allways 1:2, so:

[cpu: 0.25, memory: 0.5Gi]
[cpu: 0.5, memory: 1.0Gi] 
[cpu: 0.75, memory: 1.5Gi]
# And so on ...