Proof of concept
[ar] إثبات المفهوم
[ca] Prova de concepte
[de] Proof of Concept
[es] Prueba de concepto
[fa] اثبات مفهوم
[fi] Konseptitodistus
[fr] Preuve de concept
[he] הוכחת היתכנות
[it] Proof of concept
[ja] 概念実証