how does google adwords select the ads to save the conversion?
When a customer clicked Ads 1, he did not buy anything.
Then he came back by clicking Ads 2 in 30 days, and he bought something.
Was this conversion counted in Ads 1 or Ads 2 in google Adwords ?
In addition, was this conversion counted in Ads 1 or Ads 2 in google analytics?
Welcome to AdWords discussions forum. This is an interesting question.
If i click Ad1 triggered by Keyword 1 on Day 1 and bounce off with out making any transaction then it would be recorded in your account as bounced visit for that respective keyword. On Day 2, I came again but through Ad2 (here Ad2 would be triggered by keyword2). Google tracking is intelligent enough to isolate the transaction based on the ad that visitor came through and the keyword that triggered the ad. So the answer would be in AdWords and Analytics the conversion would be recorded under Ad2. But the followup question would be about the data of the transaction recorded in Adwords Vs Analytics. Here is an explanation for the data of transaction.
Date of transaction
AdWords reports conversions against the date/time of the click that led to the successful action, not against the date of the successful action itself. For example, let’s say a visitor makes a purchase on July 20th, but clicked on the creative 1 day ago on July 19th. In AdWords, the conversion would be attributed to July 19th, the day of the click. Conversely, in Google Analytics, the conversion is attributed to July 20th, the day the conversion actually occurred
You can find more details in the following link:
AdWords reports the conversion for the last AdWords click, Analytics reports the conversion for the last "non-direct" source. In this case, they are both the same, Ad 2.
Best of Luck!