From Learn Azure in a Month of Lunches, Second Edition by Iain Foulds.
You can be incredibly productive with Azure without mastering every feature, function, and service. Learn Azure in a Month of Lunches, Second Edition gets you up and running quickly, teaching you the most important concepts and tasks in 21 practical bite-sized lessons. As you explore the examples, exercises, and labs, you’ll pick up valuable skills immediately and take your first steps to Azure mastery! This fully-revised new edition covers core changes to the Azure UI, new Azure features, Azure containers, and the upgraded Azure Kubernetes Service.
This diagram shows how you can achieve true redundancy with an Azure web application.