Documenting and Communicating Architecture
Views, the C4 model, ADRs, and frameworks: documentation people actually use.
Undocumented architecture exists only in heads that leave. This topic teaches you to document for each audience with views, draw the system at four zoom levels with the C4 model, capture decisions in ADRs while the reasons are fresh, and lean on arc42 and docs-as-code so the writing survives the project.