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Mozilla Data Documentation

This documentation was written to help Mozillians analyze and interpret data collected by our products, such as Firefox and Mozilla VPN. Mozilla refers to the systems that collect and process this data as Telemetry.

At Mozilla, our data-gathering and data-handling practices are anchored in our Data Privacy Principles and elaborated in the Mozilla Privacy Policy. You can learn more about what data Firefox collects and the choices you can make as a Firefox user in the Firefox Privacy Notice.

If there's information missing from these docs, or if you'd like to contribute, see this article on contributing, and feel free to file a bug here.

You can locate the source for this documentation in the data-docs repository on GitHub.

Using this document

This documentation is divided into the following sections:

Introduction

This section provides a quick introduction to Mozilla's Telemetry data: it should help you understand how this data is collected and how to begin analyzing it.

Cookbooks & Tutorials

This section contains tutorials presented in a simple problem/solution format, organized by topic.

Data Platform Reference

This section contains detailed reference material on the Mozilla data platform, including links to other resources where appropriate.

Dataset Reference

In-depth references for some of the major datasets we maintain for our products.

For each dataset, we include a description of the dataset's purpose, what data is included, how the data is collected, and how you can change or augment the dataset. You do not need to read this section end-to-end.

Historical Reference

This section contains some documentation of things that used to be part of the Mozilla Data Platform, but are no longer. You can generally ignore this section, it is intended only to answer questions like "what happened to X?".

You can find the fully-rendered documentation here, rendered with mdBook, and hosted on Github pages.