The by Source reports under the Google Analytics 4 reports summarize the GA4 stream reports from Google Analytics with respect to various marketing sources.
Guide to marketing sources.
A. Navigate to: Performance AI ➡️ Google Analytics ➡️ Google Analytics 4.
B. This will open the Google Analytics 4 sub-menu:
a. Click on by Source.
b. This will open the by Source reports. The first report is an Overview of the users of
your website divided according to the CrSTAL milestones.
c. A Breakdown by Source of the users of your website divided by the marketing sources
they originated from and the CrSTAL milestones they've completed.
Next:
How do I use the By Source reports under the Google Analytics 4 reports?