What is the typical latency within a single availability zone?

What is the typical latency within a single availability zone?

• A. Sub-1 millisecond.
• B. 5-10 milliseconds.
• C. 50-100 milliseconds.
• D. 1-2 seconds.

Answer: (A)

Within a single Availability Zone, the network is a tightly integrated, high-speed fabric inside one data center. This close proximity and optimized routing mean data can move between compute, storage, and cache nodes with extremely small delay, far smaller than a millisecond. That ultra-low latency is why the option describing sub-millisecond performance is the best fit for intra-AZ communication. Latency grows when traffic must cross to other AZs or regions, because it travels longer distances and goes through additional network hops, which is why those other values aren’t representative of intra-AZ performance.

Within a single Availability Zone, the network is a tightly integrated, high-speed fabric inside one data center. This close proximity and optimized routing mean data can move between compute, storage, and cache nodes with extremely small delay, far smaller than a millisecond. That ultra-low latency is why the option describing sub-millisecond performance is the best fit for intra-AZ communication. Latency grows when traffic must cross to other AZs or regions, because it travels longer distances and goes through additional network hops, which is why those other values aren’t representative of intra-AZ performance.