4 ms·
noob question: Aren't companies using several regions for availability and redundancy?
by JamesAdir 5y ago
noob question: Aren't companies using several regions for availability and redundancy?
- blahyawnblah 5y agoIdeally, yes. In practice, most are hosted in a single region but with multiple availability zones (this is called high availability). What you're talking about is fault tolerance (across multiple regions). That's harder to implement and costs more.
- yunwal 5y agoI'm seeing outages across several regions for certain services (SNS), so cross-region failover doesn't necessarily help here. Additionally, for complex apps, automatic cross-region disaster recovery can take tens or even hundreds of dev years, something most small to midsized companies can't afford.