The headline over-promises (not the author's fault), since the article is about the origins of the Pentateuch. I would nuance this or that, but overall it is a quite good overview of the traditional Documentary Hypothesis.
That said, many specialist now have considerable reservations about elements of the traditional hypothesis. I think there is widespread agreement on a Deuteronomy source and a Priestly source. Beyond that, there is less agreement. D and P are embedded in the Pentatuech with a lot of other stuff that I like to think of as the Sticky Goo source(s) (a.k.a. JE). And some specialists want to break even D and P down into sub-sources.
For more comments on the current state of the question, see here and here.
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