Instagram, Dropbox, many of the major tech companies still use a monolith. Or you can think of it as trunk/branch architecture. One main "trunk" service and ot

Instagram, Dropbox, many of the major tech companies still use a monolith. Or you can think of it as trunk/branch architecture. One main "trunk" service and other branch services augmenting it, which is a simpler thing to reason about. Now imagine a small shop of 20 devs deciding to build something more complicated.