A Stream is a tool that you can create, which provides customized, specific ways to collect data proactively through time, and persist that data in a way that’s easily accessible.
When you create a stream that's based on a query or based on a specific operation, Lightstep receives data from your Microsatellites and stores statistics and example traces related to the stream to ensure you always have data from 0 to p99.9, including outliers.