to start (something); to start up; to boot (a computer); to launch (a business)
新しい事業を立ち上げた。
I launched a new business.
チームを立ち上げるのに半年かかった。
It took half a year to launch the team.
彼女は一人で会社を立ち上げて成功させた。
She started a company by herself and made it successful.