Why is the non-RDBMS popular?

Ok, this is a softball question for anyone inside the big data space.  However, it does come up as a real question when talking to business owners and application users.   This is a quick high-level description of NoSQL/NewSQL, why it’s different than SQL RDBMS, and where I think both of those markets are going.

Why is the non-#RDBMS becoming so popular? #NoSQL #database (with transcript)