How Do Cloud Hyperscaler Infrastructures Compare?
The leading providers of enterprise cloud services – the so-called hyperscalers – like to tout the size and scope of their global networks. Looking closely at who has the biggest footprint, however, doesn’t tell the whole story. Suppliers differ in a range of features and functions.
This isn’t to say that cloud titans can’t be compared with one another. The most fundamental points of comparison are typically the sheer number of regions and availability zones offered by providers worldwide. These are broadly defined as follows:
Regions are defined by most hyperscalers as geographic locations in which their services are available. This does not correspond to countries, since a country may have multiple regions.
Availability zones are groups or clusters of datacenters within a region, networked for low latency. For most public cloud providers, the number of availability zones per region is three -- enough to ensure that services have redundant hardware-based backup, fault tolerance, and failover protection.
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