There’s a boom in the number of grad degrees and certificates being awarded these days, especially as more colleges have moved to offer degrees online. And these degrees are now offered in different shapes and sizes, and in some cases at the faction of the price of in-person degrees. To help understand this shifting landscape, EdSurge sat down with Sean Gallagher, who has written a book on the future of university credentials, and runs a center at Northeastern University that tracks this area.