What is Strategic design and its process?

So I am a UX designer but I have been researching about this new role of "design strategist or strategic designer" and even though I read articles and watched many videos about it, I'm still very confused. So I am wondering if anyone could help me understand:

• What is strategic design?
• what is the difference with UX or Service design? is it that we are now dividing the process we used to do entirely in two as "strategic design" (long-term thinking that includes the research, data anlysis, etc.) and "tactical design" (short-term thinking that includes visual design, etc.)?
• If you had to draw and describe the process of strategic design: what would this be?
• Finally: what methods does Strategic design includes? (example: stakeholders interviews, user research, etc.)

Thank you in advance,