Marketing attribution models assign different values to the various touchpoints that drive sales. It's commonly used multi-channel strategies to acquire as many customers and sales as possible. The contribution of sales is made up by multiple partners and not always with high ROAS as advertising platforms showing you. A correct analysis of sales contributions is important for allocation of budget on the different channels and plan a proper marketing strategy based on these. The most widespread attribution methods currently and still present in GA3 are:: First Interaction, Last Non-Direct Click....* Linear Attribution....prematurely* Time Decay*Once you have switched to GA4, you can use an attribution method based on the "standard"