elevator pitch
or el·e·va·tor speech
[ el-uh-vey-ter pich or el-uh-vey-ter speech ]
/ ˈɛl əˌveɪ tər ˌpɪtʃ or ˈɛl əˌveɪ tər ˌspitʃ /
noun
a brief talk or pitch intended to sell or win approval for something: a two-minute elevator pitch to a prospective investor.
Origin of elevator pitch
First recorded in 2000–05; from the idea of persuading someone while on an elevator moving between floors