Collecting New Data
For information about what sorts of data may be collected, and for information on getting a data collection request reviewed, please read the Data Collection Guidelines.
The mechanics of how to instrument new data collection in Firefox are covered in Adding a new Telemetry probe.
For non-Telemetry data collection, we have a mechanism for streamlining ingestion of structured (JSON) data that utilizes the same underlying infrastructure. See this cookbook for details on using it.