cloud region

A geographic cluster of data centers within a major cloud provider (AWS, GCP, Azure) that operates as an independent infrastructure unit. Each region contains multiple availability zones — physically separated facilities that provide redundancy within the region. Choosing the right region affects latency (users connect faster to nearby regions), compliance (data residency requirements), and cost (prices vary by region).

When you'd see it: Cloud account setup, architecture design, compliance reviews, disaster recovery planning.

Why it matters: Region selection is often the first cloud architecture decision and one of the hardest to change later. It affects latency, cost, compliance, and disaster recovery strategy.

Common mistakes: Choosing a region based on price without checking latency to primary user base, or without verifying it supports all the services the architecture needs.

Related availability zone, multi-region, data residency, CDN