Long definition
Change detection tools historically used visual diffs (screenshot comparison) or DOM diffs (HTML tree comparison). Modern tools add semantic diffs — using AI to determine whether the change is meaningful (a price went from $9 to $19) or cosmetic (a marketing tagline was reworded). Use cases: pricing-page monitoring, legal-disclaimer monitoring, terms-of-service monitoring, competitor-changelog monitoring, government-page monitoring.
Examples
- Monitoring a competitor's /pricing page and getting alerted when actual tiers change.
- Monitoring a vendor's status page and getting alerted on incidents.
- Monitoring a government regulation page for revisions.
How Ayewatch handles it
AyeWatch supports URL-level web change detection alongside topic monitoring. The AI describes what specifically changed so users skim a summary instead of a raw diff. ASAP Mode catches changes within 30 minutes.