Your customer is aiming not only to drive conversions, but also to track how those conversions drive users to enrol in their weekly newsletter distribution list. When setting up their data-driven attribution model in Search Ads 360, what else should you set up?

To track how conversions influence newsletter sign-ups, you need to define specific paths and interactions beyond standard channels. Customised channel groupings allow you to create unique groupings based on your business objectives, such as combining specific ad campaigns, organic search, and website referrals that lead to both a conversion and a newsletter sign-up. This provides granular insights into the user journey. Keyword groupings are for organizing keywords, not tracking conversion paths. Multichannel groupings are a general concept, but "customized" specifies the necessary tailoring. Automated channel groupings rely on predefined rules, which may not capture the specific, nuanced journey you're trying to track for newsletter sign-ups.