Azure Physical Infrastructure

In this lesson, you will learn about the core architectural components of Azure, focusing on the physical infrastructure. Understanding these components is crucial for designing resilient and reliable solutions on Azure.

Physical Infrastructure

The physical infrastructure for Azure starts with datacenters. Conceptually, Azure datacenters are similar to large corporate datacenters, featuring resources arranged in racks with dedicated power, cooling, and networking infrastructure. However, Azure's global cloud provider status means it has datacenters around the world, grouped into Azure Regions or Azure Availability Zones to ensure resiliency and reliability for business-critical workloads.

Datacenters

Azure datacenters are facilities with resources arranged in racks, featuring dedicated power, cooling, and networking infrastructure. These datacenters are not directly accessible and are grouped into larger organizational units known as regions and availability zones.

Regions

A region is a geographical area that contains at least one, but potentially multiple, datacenters that are nearby and networked together with a low-latency network. Azure intelligently assigns and controls resources within each region to ensure workloads are appropriately balanced. When deploying resources in Azure, you often need to choose the region where you want your resource deployed. Some services or virtual machine (VM) features are only available in specific regions.

Availability Zones

Availability zones are physically separate datacenters within an Azure region, each equipped with independent power, cooling, and networking. They act as isolation boundaries; if one zone goes down, the others continue working. Availability zones are connected through high-speed, private fiber-optic networks. To ensure resiliency, a minimum of three separate availability zones are present in all availability zone-enabled regions.

Using availability zones can help m…