Õ: pole alamkomponent (subcomponent)

olemus
süsteemi osa, mida võib mõjutada
huvialune komponent (programm, moodul, protsess)

näiteid
https://reflectoring.io/upstream-downstream/

https://insnerds.com/upstream-vs-downstream-systems-challenges-and-mind-sets-in-system-modernization/

https://petroleumasia.blogspot.com/2016/11/what-is-difference-between-upstream-and.html

https://www.gsa.europa.eu/gnss-applications/gnss-industry-and-value-chain

vt ka
- allavoolu