Understanding about Azure Region, Geographies, Availability Zones and Region Pairs

Introduction

Microsoft Azure services are available in 53 regions around the world, with plans announced for 7 additional regions and 140+ available country. Select Azure region is more important to setup the cloud environment, this gives you the flexibility to bring applications closer to your users no matter where they are. It also provides better scalability, redundancy, and preserves data residency for your services.
Understanding about Azure Region, Geographies, Availability Zones and Region Pairs
Azure region
A region is a geographical area on the planet containing at least one, but potentially multiple datacenters that are nearby and networked together with a low-latency network. Azure intelligently assigns and controls the resources within each region to ensure workloads are appropriately balanced.

When you deploy a resource in Azure, you will often need to choose the region where you want your resource deployed. Region A set of datacenters deployed within a latency-defined perimeter and connected through a dedicated regional low-latency network.

Geographies in Azure
Azure divides the world into geographies that are defined by geopolitical boundaries or country borders. An Azure geography is a discrete market typically containing two or more regions that preserve data residency and compliance boundaries. 

This division has several benefits.
  • Geographies allow customers with specific data residency and compliance needs to keep their data and applications close.
  • Geographies ensure that data residency, sovereignty, compliance, and resiliency requirements are honored within geographical boundaries.
  • Geographies are fault-tolerant to withstand complete region failure through their connection to dedicated high-capacity networking infrastructure.
Availability Zones
Availability Zones are physically separate datacenters within an Azure region.Each Availability Zone is made up of one or more datacenters equipped with independent power, cooling, and networking. It is set up to be an isolation boundary. If one zone goes down, the other continues working. Availability Zones are connected through high-speed, private fiber-optic networks.


Azure Availability Zones

Region Pairs
Each Azure region is always paired with another region within the same geography (such as US, Europe, or Asia) at least 300 miles away. This approach allows for the replication of resources (such as virtual machine storage) across a geography that helps reduce the likelihood of interruptions due to events such as natural disasters, civil unrest, power outages, or physical network outages affecting both regions at once. If a region in a pair was affected by a natural disaster, for instance, services would automatically fail over to the other region in its region pair.Examples of region pairs in Azure are West US paired with East US, and SouthEast Asia paired with East Asia.

Azure Region Pairs

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Understanding about Azure Region, Geographies, Availability Zones and Region Pairs

Introduction Microsoft Azure services are available in 53 regions around the world, with plans announced for 7 additional regions and 140+ a...

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