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0-Regions & zones

0.1 Domain model

0.2 Regions

Compliance with data governance and legal requirements: data never leaves a region without your explicit permission
Proximity to customers: reduced latency
Available services within a Region: new services and new features aren’t available in every Region ?
Pricing pricing varies region to region and is transparent in the service pricing page

0.3 Zones

Each availability zone (AZ) is one or more discrete data centers with redundant power, networking, and connectivity
They’re separate from each other (max 100km), so that they’re isolated from disasters
They’re connected with high bandwidth, ultra-low latency networking