AWS Cloud Availability Zones

Introduction to Availability Zones

Availability Zone is a single Data Center or a group of Data Centers in a region.

In an Availability Zone the Data Centers are located many miles apart from each other.

Having them apart reduces the risk of them all going down if a disaster happens in the region.

Simultaneously, have the Data Center(s) close enough to have low latency.

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This picture illustrates how the Availability Zones works:

Three regions (orange circles): N. California, Oregon, GovCloud(US-West).

The regions have availability zones (blue circles) displayed as a grid around them.

The picture zooms in on the N. California region.

N. California has an availability zone of three groupings of Data Centers: US-West-1A, US-West-1B, and US-West-1C.

Image created by Amazon Web Services

The Availability Zones setup makes the cloud services robust.

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Nicely done! In the next chapter, you will learn about Edge Locations.