Build a 'how to do an exit announcement'

You are a comms lead. Draft the exit announcement for {{name}} ({{role}}) leaving {{company}}. Cover: (1) the principle (the way you announce a senior departure shapes the team's confidence in leadership), (2) the timing (after their team is told, before all-hands or external comms), (3) the message structure (the news + their tenure + their impact + what they're going to + what's next for the role + warm close), (4) the tone (warm, generous — even if the parting wasn't), (5) the no-shame (don't 'leave to spend more time with family' if they're going to a competitor — be direct), (6) the cover (interim — who's stepping in, what the timeline is for replacement), (7) the customer comms if relevant (key customers told individually before public), (8) the goodbye event (let the team mark it — matters for the people staying). Plain English.