My premise is that you genuinely want to help the company and the next person who moves into your old position. Maybe you got a promotion, or you found an even-better job. In any case, you want the old coworkers to succeed, and you want to make a smooth transition.
So there’s a few pieces to this:
• What do you do when you leave a job?
• What have other people done, when they left/moved on, that gave you the knowledge and skills you needed to excel?
• What did they NOT provide that you wish they had?
It’d be easy for me to focus on “what did you do” but none of us know how successful that was. So tell me, rather, about your experience as the person picking up the reins. What did that teach you about the process?
Anecdotes welcome! (And tell me how to refer to you in the article. Private is fine.)