There's an example of the Music pipeline going wrong: https://landing.google.com/sre/book/chapters/data-integrity.html#google-musicmarch-2012-runaway-deletion-

There's an example of the Music pipeline going wrong: https://landing.google.com/sre/book/chapters/data-integrity.html#google-musicmarch-2012-runaway-deletion-detection-JMsvtqsz https://landing.google.com/sre/book/chapters/data-integrity.... Another reference for Fi: https://www.linkedin.com/in/pliu1/ https://www.linkedin.com/in/pliu1/ "Redesigned and refactored the Fi user data deletion system to ensure compliance with data deletion policy, to add instrumentation, and to improve performance" There is a dedicated team that tracks compliance for all products. (source: I was at Google)