Ask HN: Suggestions for new LEADERSHIP role

Hi, I am taking a new Technology leadership role in my automotive organisation. We work on automated driving stuff. Earlier I handled 30 enggs. Now it's big responsibility to handle 150 enggs of course with 5-7 direct reportees. I need your inputs or suggestions on how to motivate, set vision and make them align,create roadmaps, bring efficiency, conduct workshops etc. Any pointers/ideas will be of great help. I would like to know your approaches and effective methods.