**Medium priority for review, feedback/iteration, approval**:
- [] [[ https://wikitech.wikimedia.org/wiki/Event_Platform/Analytics/Fragments#Sequences | activity sequences ]] - https://gerrit.wikimedia.org/r/615560
- [] [[ https://wikitech.wikimedia.org/wiki/Event_Platform/Analytics/Fragments#Campaign_Attribution | UTM parameters ]] - https://gerrit.wikimedia.org/r/615563
- [] [[ https://wikitech.wikimedia.org/wiki/Event_Platform/Analytics/Fragments#User | user ]] - https://gerrit.wikimedia.org/r/615561
- [] [[ https://wikitech.wikimedia.org/wiki/Event_Platform/Analytics/Fragments#Page | page ]] - https://gerrit.wikimedia.org/r/615562
**Note**: [[ https://gerrit.wikimedia.org/r/c/schemas/event/secondary/+/615566 | A/B testing fragment ]] is a work in progress in collaboration with #product-infrastructure-data, is being discussed, and is not ready for review yet.