Definition
What is Direct Traffic?
Direct traffic is the GA4 channel for sessions where no referring source could be determined, traditionally attributed to users typing a URL or using a bookmark. In practice it also collects sessions stripped of referrer data, including some app clicks, untagged links, and certain AI assistant and privacy-tool referrals.
Why it matters
An inflated Direct channel often hides real acquisition sources, so treating it as a catch-all rather than genuine type-in traffic prevents you from misreading where visitors come from.