How would you measure the success of the Meta (Facebook) photo upload feature?

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Clarifying questions:

  1. Is my understanding of the feature correct? – A feature that enables users to either take pics or access pics from their gallery and post on facebook. Based on the user’s privacy settings, user’s friends, some of the friends, or anyone on facebook visiting the user’s profile can check the post.
  2. Is it the same feature that is used to upload photos on facebook stories, the marketplace, dating, etc.? If yes, do you want me to focus on metrics for all or just the photo uploader on the feed? I’d prefer the latter keeping the time we have for the interview.
  3. Your thoughts on why I think Facebook must have launched this feature? – Sharing pictures is a great way to stay connected with friends and doing activities with like-minded people, empowering the community
Business Goal: With users sharing pics with their network, the engagement would improve, and thereby more revenue for the business per user.
User journey:
  1. User accesses her facebook account
  2. Clicks on the “photo” option on the feed
  3. Either clicks on “camera” icon at top right or:
    1. Clicks on access gallery to give facebook the rights to access photos
    2. User selects the photo(s) to be posted
    3. User either adds the caption or leaves it blank
    4. User chooses who can see the picture
    5. User clicks on the post button at the top right
Activation Metrics:
  1. # of users who clicked on the photo option for the first time (on desktop, mobile, within mobile – both ios and android)
  2. # of users that clicked on the camera icon for the first time
  3. # of users who shared their gallery with facebook
Engagement metrics:
  1. Avg picture posted per month
  2. Avg time to post per month
  3. Avg # of pictures per post
  4. For the users that used the feature:
    1. Avg session duration before and after the launch
    2. % increase or decrease in # of friends after launch
    3. % increase or decrease in # of comments, likes, etc. before and after the launch
    4. Daily active time on facebook
    5. # of posts shared:
      1. with friends
      2. publicly
Retention metrics:
  1. # of users that used the feature for the second time per month
  2. Time to repeat usage per month
  3. NPS score
  4. Average Revenue Per User
Prioritization:

To keep tabs on the discoverability of the feature, I’d track the first activation metric, but since the primary goal of the feature is to improve engagement, I’d focus on # of pics posted per month and avg. session duration per month as my input metrics and Average Revenue Per User as my output metric.