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Stage Landed
Status `
Release target Firefox 7
Health OK
Status note Deployed, see


Product manager Chris Blizzard
Directly Responsible Individual Taras Glek
Lead engineer Taras Glek
Security lead Curtis Koenig
Privacy lead Sid Stamm, Asa Dotzler
Localization lead `
Accessibility lead `
QA lead AndreiD
UX lead Alex Limi
Product marketing lead `
Operations lead `
Additional members Daniel Einspanjer (metrics), Graydon Hoare, Rob Sayre

Open issues/risks


Stage 1: Definition

1. Feature overview

Telemetry allows Engineering to receive aggregate data of browser health in the field. Think cache hit rates, page load times across all browser instances or anything else we're interested in.

The goal for this feature is to give our developers the ability to know if changes they are making have wide-ranging positive and negative effects at scale. Are users seeing better performance?

Another goal of this is to give us easy-to-use infrastructure to learn about the structure of the Internet as a whole. That is, how do we tune our browser based on what the Internet and Web do?

2. Users & use cases


3. Dependencies


4. Requirements

  • Modify privacy policy(Asa)
  • Add UI (Mike Hommey)

See for ongoing telemetry enhancements.


This is not a system for gathering feedback from individual users. It is a system for us to get aggregate health data about browsers in the field. It's also a chance for us to run lightweight tests if we want to learn how certain settings will affect browser performance or user experience. It is distinct from the Test Pilot program.

Stage 2: Design

5. Functional specification


6. User experience design


Stage 3: Planning

7. Implementation plan


8. Reviews

Security review

Privacy review

Localization review




Quality Assurance review


Operations review


Stage 4: Development

9. Implementation

Need: Services plan, deployment plan, early items to measure.

Stage 5: Release

10. Landing criteria


Feature details

Priority P1
Rank 999
Theme / Goal `
Roadmap Platform
Secondary roadmap `
Feature list Platform
Project `
Engineering team Automation and Tools

Team status notes

  status notes
Products ` `
Engineering ` `
Security sec-review-complete Notes
Privacy ` `
Localization ` `
Accessibility ` `
Quality assurance Signed off for release `
User experience ` `
Product marketing ` `
Operations ` `

Other Documentation