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Campaigns and marketing

Conversions API

A conversions API is a server-to-server route for reporting outcomes such as leads and purchases back to an advertising platform, instead of relying on a browser pixel.

Also calledserver-side conversion tracking

It matters for messaging because the conversion happens in a chat, where no pixel can fire. Reporting the outcome back lets the ad platform optimise for conversations that ended in a sale. Events need a deduplication id so an outcome reported twice is not counted twice.

Worth knowing alongside it.

Click-to-WhatsApp ads
Click-to-WhatsApp ads are Meta ads whose call to action opens a WhatsApp conversation with the advertiser instead of sending the person to a website.
Attribution
Attribution is the practice of connecting an outcome, such as a sale, back to the campaign, ad, or link that produced it.