> C4 approach to diagramming This highlights my only beef with TFA, since it seems to go against the advice to not mix abstraction levels. TFA is great advice

> C4 approach to diagramming This highlights my only beef with TFA, since it seems to go against the advice to not mix abstraction levels. TFA is great advice for getting at least mediocre diagrams, informative and inoffensive. But the best diagrams are deliberately mixing levels to highlight stuff, because layer boundaries are usually where it gets tricky. Maybe none of this is relevant if you really want to split hairs about what architecture vs system vs component diagram “really” means, but I’m not aware of nonfuzzy definitions for that and most people seem to use the terms informally.