A one-page view of architectures of interest

Even though I'm trying to shift the perspective from the endless debates about definitions of business architecture and enterprise architecture, this site is intended to be a contribution to those debates.  There are a lot of "one-page" architecture pictures floating around, so here is mine from some fairly recent work.  The key here is that, although pervasive, the architecture of information technology is a small subset of the architecture of enterprise.  This is keeping in mind that enterprises are largely information systems in their own right.