System archetypes
In LEF docs, a software system is typically an Environment.
A lane (in DTAP) is an occurrence of that system; the construct is stable across lanes.
Thinkwise environment GUI → app tier → DB (+ object storage), with shared infra enablers.
Report App environment Mobile apps + web portal → backend/API → DB (+ object storage).
Sales enablement Landing sites + online demo (typically built on pre-sales lanes).