Tough to tell from the diagrams exactly, but it looks like the majority of their data is stored in their own data centers, which might mean some reluctance to m

Tough to tell from the diagrams exactly, but it looks like the majority of their data is stored in their own data centers, which might mean some reluctance to migrate and ship data to the cloud (“cloud storage” only makes an appearance in the Gen 1 chart). There also exists at least one public example where they’ve bought a commercial database to build on (https://www.memsql.com/blog/real-time-analytics-at-uber-scale/ https://www.memsql.com/blog/real-time-analytics-at-uber-scal...). I’d be willing to concede that there might be legit reasons for not wanting to use BQ or Snowflake. That being said, we use Snowflake heavily at Strava and are very happy with it.