For a globally deployed application that requires redundancy and fast data access, which storage method is most suitable?

• A. Local storage
• B. Multi-regional
• C. Cold storage
• D. NAS

Answer: (B)

The key idea is delivering data from multiple geographic regions to keep access fast for users worldwide while staying resilient to regional failures. Multi-regional storage replicates data across several regions, so users connect to the closest region, which minimizes latency, and if one region experiences an outage, others keep serving data. That combination of low latency for a global audience and built-in redundancy makes it the best fit for a globally deployed application.

Local storage holds data in a single location, so it has no built-in cross-region redundancy and can suffer from higher latency or outages affecting everyone. Cold storage is designed for long-term archival and rarely accessed data, so retrieval is slow and expensive, not suitable for fast data access. NAS is typically tied to a single network or data center, offering centralized storage but not inherently distributed globally, which leads to higher latency for distant users and adds complexity to achieve global redundancy.