AFAICT, Hive/Snowflake are the only overlapping concerns here, and I can see why they would have both (Snowflake may be the better product, but at the end of th

AFAICT, Hive/Snowflake are the only overlapping concerns here, and I can see why they would have both (Snowflake may be the better product, but at the end of the day Netflix owns their Hive install). Everything else solves different problems at Netflix scale. I'm spitballing here but Cassandra could be used for metadata serving (high throughtput, embarassingly parallel reads with high uptime), RDS for their billing system (transactions, ACID, etc), Druid for realtime OLAP and Presto as an interface to Hive/Snowflake. A smaller company wouldn't need this level of complexity (if you aren't large, you could probably serve your metadata from MySQL, and just use Snowflake as your OLAP engine).