Telemetry

1. What questions will you answer with this data?

This will allow us to understand which features are being used and how are they used. Based on the data, we will have a better scope of shipping the right features to users and obtain actionable insights for the product. We will understand if any changes to the product (e.g. GV, other features) will increase/decrease the MAUs and DAUs.

2. Why does Mozilla need to answer these questions? Are there benefits for users? Do we need this information to address product or business requirements?

• Establish baselines or measure changes in product or platform quality or performance.
• Provide information essential for advancing a business objective such as supporting OKRs.
• Determine whether a product or platform change has an effect on user or browser behavior.

3. What alternative methods did you consider to answer these questions? Why were they not sufficient?

We have access to the number of sessions, but we need to understand engagement on a more micro level.

4. Can current instrumentation answer these questions?

No

5. List all proposed measurements and indicate the category of data collection for each measurement, using the Firefox data collection categories on the Mozilla wiki.

Measurement Description	Data Collection Category	Tracking Bug #
DAU/WAU/MAU (Engagement Results)	Category 2 ìInteraction dataî	#85
Session length distribution	Category 2 ìInteraction dataî	#85
Engagement ratio	Category 2 ìInteraction dataî	#85
Number of users	Category 2 ìInteraction dataî	#85
New user retention	Category 2 ìInteraction dataî	#85
DAUs by locale	Category 2 ìInteraction dataî	#85
Distribution of Devices Over Time	Category 1 ìTechnical dataî	#85
Action Counts	Category 2 ìInteraction dataî	#85 #395
Search Engine Counts	Category 2 ìInteraction dataî	#395
Search Counts	Category 2 ìInteraction dataî	#395

Sessions:

Event	Category	Method	Object	Value
Start session (App is in the foreground)	Action	Foreground	App	N/A
Stop session (App is in the background)	Action	Background	App	N/A

Browsing:

Event	Category	Method	Object	Value
URL entered	Action	type_url	search_bar	N/A
Search entered	Action	type_query	search_bar	bundled engine name
Voice query	Action	voice_query	voice_input	bundled engine name

6. How long will this data be collected? Choose one of the following:

I want to permanently monitor this data. (@larsberg)

7. What populations will you measure?

All users opting in to telemetry

8. Which release channels?

Google Play store, Oculus store and Vive Port store

9. Which countries?

Worldwide

10. Which locales?

Worldwide

11. If this data collection is default on, what is the opt-out mechanism for users?

The user can go into the developer settings panel to toggle off

12. Please provide a general description of how you will analyze this data.

Look at the features used over time to see if it increases with improvements to the app.

13. Where do you intend to share the results of your analysis?

Internal use only