You still need to:

know where you are and what you have and what state it is in
know what you want (at least at a conceptual / business level)
know what you need to move from current to future
guide choices, implementation and make tradeoffs between paths of action
have relevant data, information and content to deliver the products and services and make decisions
evolve your application and technology landscapes to take advantage of developments while managing risk, security, privacy and efficiency concerns
partition work across teams in a way that allows their results to be integrated
have a realistic roadmap to manage expectations across customers, business and technical teams
manage quality of implemented solutions to ensure service, customer experience and future maintainability

Of course, properly chosen and employed, AI can help with many of these!