This is the 4448th most frequent Russian word.
возглавил
"Возглавил" means "led" or "headed."
The word "возглавил" in this sentence implies that he was appointed as the leader or head to oversee the development of new software.
Он возглавил проект для разработки нового программного обеспечения.
He led the project for developing new software.
Here, "возглавила" indicates that she was in charge of representing and directing the delegation during the event.
Она возглавила делегацию на международной конференции.
She led the delegation at the international conference.
In this example, "возглавил" denotes that the manager was presiding over the meeting and facilitating the discussion.