GSL is a text-based format that treats architecture graphs as the authoritative source of truth, stored in version control, from which multiple diagrams and views are automatically derived. Rather than maintaining many outdated diagrams separately, GSL enables querying the single canonical graph to answer questions like blast radius analysis and generate consistent outputs across teams.
Graphviz offers four specialized layout engines—dot, neato, twopi, and circo—each optimized for different graph structures: dot for hierarchical directed graphs, neato for force-directed networks, twopi for radial layouts, and circo for circular topologies. Understanding these engines and testing them in browser-based editors helps software architects create clearer, more readable diagrams without node overlaps and crossing lines.