The act of beginning operations or officially launching/establishing an organization, project, or initiative; inauguration/start-up.
新しい委員会は来月発足する予定だ。
The new committee is scheduled to be inaugurated next month.
会社は海外支店の発足を正式に発表した。
The company officially announced the launch of its overseas branch.
政党が発足した当初は支持者も少なかったが、徐々に勢いを増した。
When the party was first founded it had few supporters, but gradually gained momentum.