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Sure! So, essentially, you are trying to measure the effectiveness of your Google Ads by reporting certain user actions (like purchases), also known as conversions, back to Google Ads. You’re already tracking these actions in Google Analytics 4 and you’re looking to connect them back to the individual users and the ads they interacted with. To do this, you’re considering using the Google Click Identifier (gclid), a unique code used by Google to keep track of these links.
Including the gclid in your event data would be one way to achieve this. Conceptually, it’s similar to including the user ID you are currently generating in your database. When you report an event, you can include the gclid in your data object and then send it along with your API call to Google Analytics. Google should then be able to use this ID to connect the dots between user actions, your Google Ads, and your Analytics data. Make sure to store the gclid when the user first lands on your webpage from the ad click, and then include it in all subsequent user events.
