What feature in Route 53 allows you to return multiple healthy records for a DNS query?

Multivalue Answer Routing in Amazon Route 53 is specifically designed to return multiple healthy records in response to a DNS query. This feature enhances availability and provides fault tolerance by enabling the service to direct users to different resources based on health check status. When a DNS query is made, Route 53 assesses the health of the records associated with the domain. If multiple records are healthy, it returns them all in the response.

This is particularly useful in load balancing scenarios where different servers or endpoints can handle requests. By providing multiple healthy records, Multivalue Answer Routing ensures that if one endpoint fails, clients can still reach other operational resources.

Other routing policies, such as Weighted Routing, Geolocation Routing, or Simple Routing, serve different purposes and do not fulfill the same need for returning multiple healthy responses. Weighted Routing splits traffic based on assigned weights but does not guarantee multiple responses. Simple Routing serves a single record per query, and Geolocation Routing directs traffic based on geographic location but again does not support returning multiple records. Therefore, the feature that directly supports returning multiple healthy records is indeed Multivalue Answer Routing.