How to monitor competitor website changes automatically

I’ve been building a competitor monitoring tool recently and started thinking about how product teams actually track competitor changes.

A lot of teams still manually check competitor websites for updates like pricing changes, messaging tweaks or new features.

While working on this I realised how often small changes happen quietly across landing pages and pricing pages.

I wrote a short post about approaches to monitoring these changes automatically and some of the signals teams might want to track.

Curious how others keep track of competitor changes.