Fleet Indexing is a managed service that allows you to index and search your registry, shadow and connectivity data in the cloud. After your fleet index is set up, the service manages the indexing of all your registry and shadow updates. You can use a simple query language based on the popular open source search engine, Apache Lucene, to search across this data.
In the exercises in this section you will perform searches in the registry. You’ll see that you can get a lot of information about your device with a single query.