区域选择经济学
在价格、延迟、驻留与出站流量之间取得平衡。
摘要与快速解答
同一台虚拟机仅因区域不同就可能贵一倍或便宜一半。区域选择就是在价格、延迟、数据驻留与服务可用性之间做平衡。
审阅于
2026-08-22
Price spreads between regions are real
US and European flagship regions carry the deepest capacity and lowest base prices; emerging-market and remote regions add premiums of 10-40%. Comparing your candidate regions side by side takes minutes and compounds into permanent savings.
Latency sets the floor, not the ceiling
Users notice round trips above ~100 ms. Choose the cheapest region within acceptable latency of your users, not the closest region regardless of price.
Residency and compliance constraints
GDPR, sector rules, and corporate policy can pin workloads to specific jurisdictions. When residency forces a pricier continent, offset by moving batch, analytics, and staging workloads to cheaper regions.
Egress and inter-region traffic
Data transfer between regions - and out to the internet - can outweigh compute savings on chatty architectures. Co-locate tightly coupled systems; keep caches near users.
核心结论
- Identical instances vary widely in price between regions.
- Pick the cheapest region inside your latency and residency envelope.
- Model egress before splitting tiers across continents.
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