Working with Service Instances - Amazon Cloud Map
Services or capabilities described in Amazon Web Services documentation might vary by Region. To see the differences applicable to the China Regions, see Getting Started with Amazon Web Services in China (PDF).

Working with Service Instances

A service instance contains information about how to locate a resource, such as a web server, for an application. After you register instances, you locate them by using DNS queries or the Amazon Cloud Map DiscoverInstances API action.