spring·board 
/ˈsprɪŋˌboɚd/ noun
plural spring·boards /ˈsprɪŋˌboɚd/ noun [count] 1 : a strong, flexible board that is used for jumping very high in gymnastics or diving 2 : something that helps you start an activity or process
▪ The news served as a springboard for a class discussion.
▪ The news served as a springboard for a class discussion.
