The 'Browser type' dimension lists organizations who made the browser that the visitor uses. This dimension is useful when you want to see which overarching browsers visitors use. It provides value over the 'Browsers' dimension in that it does not list different versions of the same browser as separate dimension items.
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This dimension references a lookup table internal to Adobe. The lookup value is based on the User-Agent HTTP header in image requests. If you use an AppMeasurement library (such as through Adobe Experience Platform Launch), this dimension works out of the box.
Dimension items include organizations that make browsers. Common dimension items include "Google" (the creators of Chrome), "Apple" (the creators of Safari), "Microsoft" (the creators of Edge), and "Mozilla" (the creators of Firefox).