Plain SVG, rendered on the server, routed orthogonally. Every one carries a text description, because a diagram that explains an architecture to sighted readers and nothing to anyone else is half a diagram.
REQUEST PATH
A browser request reaches the edge, which either serves from cache or calls the API; the API reads from Postgres and publishes to the queue.
Browser connects to Edge, GET.
Browser connects to API, POST.
API connects to Postgres, SQL.
API connects to Queue.
Queue connects to Observability.
Postgres connects to Observability.
BUILD PIPELINE
Source is built, then tested and type-checked in parallel, and only a run that passes both is promoted to production.
Source connects to Build.
Build connects to Tests.
Build connects to Types.
Tests connects to Production.
Types connects to Production.
THE SHADER PIPELINE
The five passes: the effect renders to a texture, displacement warps it, two half-resolution blurs run in sequence, and the composite combines the warped and blurred results.