SEO Drift Monitoring

Point-in-time snapshots plus diffs. Answers "what changed since last month?" with stored evidence instead of memory and guesswork.

Inputs

• Required: domain
• Capture mode: nothing else needed — reuse pillar scores from the last audit file when one exists
• Compare mode: optional --from / --to snapshot timestamps (defaults: oldest vs newest)

When to snapshot

• After every audit — the audit's pillar scores become the scores section
• On a monthly cadence for retained clients, same week each month
• Immediately before and after migrations, redesigns, and major releases
• After a confirmed Google core update finishes rolling out