Where it shows up
Old content stays published because nobody owns the retirement call or wants to risk removing something useful.
Look for owner, audience, task, last reviewed date, source material, usage signal, risk, replacement path, and retirement trigger.
No technology
Pick one stale content area and label each item keep, revise, merge, archive, or confirm with owner.
Microsoft 365 or Google Workspace
Use a spreadsheet, SharePoint List, or Google Sheet with status, owner, last reviewed date, next action, and replacement link.
AI-assisted
Ask AI to summarize likely duplicates and stale items from approved titles and descriptions, then have owners confirm every decision.