Multi-value response
Traditional DNS servers usually respond with any number of values for each request. Similarly, when this kind of service is required, multi-value response routing can be used. Each request will return up to eight possible responses. To extend the functionality of traditional DNS and deliver only healthy records, the Route 53 service can also perform a health check on the origin. This way, only the addresses that actually respond will be returned in the multi-value response. Applications requiring a list of possible servers to perform tasks in a distributed manner will benefit greatly from the multi-value response routing. Examples would be peer-to-peer applications, video streaming, and HPC.
The following diagram demonstrates ...
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