What three tags are essential for Google Analytics campaign tracking?

The three tags essential for Google Analytics campaign tracking are Medium, Source, and Campaign.

The Source tag identifies where the traffic is coming from, such as a search engine, website, or email newsletter. The Medium tag indicates the general category of the traffic source, such as organic search, paid search, or referral. The Campaign tag allows marketers to differentiate traffic from various marketing campaigns. By utilizing these three tags together, marketers can effectively track and measure the performance of their campaigns within Google Analytics, allowing for more accurate analysis and strategy adjustments. This combination provides a comprehensive view of how users are engaging with content as a result of specific marketing efforts.

The other combinations of tags, while they may include relevant tracking dimensions, do not encompass the full suite necessary for effective campaign tracking as defined by best practices in Google Analytics.