springboard
n. B2 Upper Intermediate US //ˈspɹɪŋˌbɔɹd// UK //spɹˈɪŋbɔːd// spring·board
n. something that helps you start a new project or reach a higher level of success. It can also be a physical board used in jumping or diving.
n. a device used in diving or gymnastics to propel the performer into the air; figuratively, a starting point or catalyst for a significant development or career advancement.
The new funding was a springboard for her business.
The young athlete used the springboard to perform a perfect dive into the pool.
The publication of her first novel served as a springboard for a successful career in screenwriting, allowing her to transition seamlessly between the two mediums.
From spring + board.