[sradman]

OLAP Cubes have been disrupted by Column Stores. Unless you are interested in the history of Data Warehouses, the technology can safely be ignored.

[HighlandSpring]

They're different things entirely. Think of OLAP cubes as more of a model, a set of language (measures, dimensions) for expressing all kinds of aggregation but not necessarily prescribing the how. Column store is the new how so you can still have OLAP queries against it.

[gfody]

olap cubes are the main use case for column stores

[thingsilearned]

100% here. We need to drop old terms and methods that are now obsolete.

[marcos100]

So that we can now sell old things as exciting new technologies.