CompTIA Cloud Essentials+ (CLO-002)Business Principles of Cloud EnvironmentsMedium
A global e-commerce company is planning to deploy its customer-facing application across multiple cloud regions to ensure high availability and disaster recovery. They are evaluating a cloud provider's offering that includes distinct, isolated physical locations within a single geographic region, each with independent power, cooling, and networking. What is the technical term for these isolated locations?
- AEdge Locations
- BContent Delivery Networks
- CAvailability Zones
- DCloud Points of Presence
Show answer & explanationAnswer & explanation
Correct answer: C. Availability Zones
Availability Zones are distinct, isolated physical locations within a single geographic region. They are designed to be independent of each other (power, cooling, networking) to provide high availability and fault tolerance, making them ideal for disaster recovery within a region.
Why the other options are wrong
- A. Edge Locations are typically used for content delivery and caching closer to end-users, not for deploying entire application instances with high availability.
- B. Content Delivery Networks (CDNs) cache static content at edge locations to improve delivery speed, not for primary application deployment.
- D. Cloud Points of Presence (PoPs) are network access points, not isolated compute/storage locations for applications.
Availability Zones
Isolated physical locations within a cloud region, designed with independent infrastructure to minimize the risk of a single point of failure and enhance fault tolerance.
- Within a single geographic region
- Independent power, cooling, networking
- Used for high availability and disaster recovery
Memory trick: Think of a Region as a city, and Availability Zones as distinct neighborhoods within that city, each with its own utilities.