The article covers this in more depth, but the short answer is: The hybrid approach has benefits when your workload has both shallow-and-wide (fetch all data fo

The article covers this in more depth, but the short answer is: The hybrid approach has benefits when your workload has both shallow-and-wide (fetch all data for user X) and deep-and-narrow queries (calculate the average number of logins for all users). Row stores excel on shallow queries, column stores excel on deep queries. For time-series data you want row-oriented structures when the data just comes in and convert it to a column store after it ages.