odskocznia Englisch:

a stepping stone to something

an event or experience that helps you achieve sth else [+ to]: I see this job just as a stepping stone to better things. / 2. This could be a stepping stone, you know. / 3. Just think of it as a stepping stone.

You should use this job as a springboard to bigger things.

The company expects that this strategic move would allow it to springboard into the US market