olemus
ISO/IEC 17789:
moodul, mis on vajalik mingiks tegevuseks
ja mille teostus seda toetab
=
functional building block needed to engage in an activity, backed by an implementation

näiteid
http://ceur-ws.org/Vol-341/paper4.pdf

https://www.tandfonline.com/doi/pdf/10.1080/10658980701747245

https://webstore.iec.ch/preview/info_isoiec15408-2%7Bed3.0%7Den.pdf

vt ka
- funktsionaalüksus