....The study then categorizes each deal according to the type and significance of cultural issues, assigning weights to the following factors:Geography...General management philosophy…
The author is contrasting them as opposites. A matrix is a construct that is random access. A silo is a construct that things go in at the top, and out at the bottom in a first-in first-out, you can't take things out of the middle.
Matrix - Spread out horizontally - many positions of roughly the same stature in different fields - interplay between them - direct communication. Silo - Straight up and down, vertical - instructions flow down thru chain of command - requests for help/work/input/etc have to go up the chain to some level and then back down for action.
