What Is Synthetic Monitoring?

Synthetic monitoring runs automated, scripted visits to a website on a recurring schedule to check that tags, pages, and key user journeys are still functioning correctly, catching a broken checkout flow or a tag that silently stopped firing without waiting for a real customer to be affected first.

Where Pre-Publish Testing checks for problems before a release ships, synthetic monitoring checks continuously after, because things break in production for reasons unrelated to a deployment: a third-party script goes down, a consent platform updates its behavior, a dependent API changes. Running the same critical-journey checks on a schedule is what catches that category of failure.