Most metrics aren't really related to advertising or personal data collection, though. Things like monthly active users (part of the quarterly shareholder repor

Most metrics aren't really related to advertising or personal data collection, though. Things like monthly active users (part of the quarterly shareholder report), conversion rates, cart abandonment rates, feature usage, active minutes, and so on are all part of the usual development process. These are used pretty heavily when launching new features or changes to existing features, in order to make sure that no key metrics are adversely impacted. For example, if one launches a new feature but users are confused by it, they might be less likely to succeed at completing a transaction, thus negatively impacting revenue. The change will then be re-evaluated or even rolled back.