Conversion API
Conversion API is a server-side method of sending conversion and event data from a business system to an advertising or analytics platform.
Quick Answer
A Conversion API sends event or conversion data directly from a server or trusted backend system to a platform instead of relying only on browser scripts. It can make measurement more durable when browser-based tracking is incomplete, but it still requires strong consent handling, event design, and deduplication logic.
Key Takeaways
- Conversion APIs strengthen measurement resilience.
- They need careful event design and deduplication.
- Server-side data is only useful when governance and consent are solid.
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Conversion API is part of the shift toward more resilient measurement as browser-side tracking becomes less dependable.
What It Means
Instead of depending only on client-side scripts, the business can send conversion data from the server, CRM, or another trusted system to the relevant platform.
Why It Matters
It helps improve data completeness and reliability when client-side cookies, blockers, or browser rules reduce what can be measured in the front end alone.
Example In Practice
A lead submission may be tracked both through browser tags and a server-side confirmation, with deduplication rules to avoid double-counting.
What It Is Not
A Conversion API is not a shortcut around consent or privacy. It still needs proper governance and lawful data handling.
Related Terms
Deeper Guides
When This Matters For Your Business
This matters when the business needs more dependable conversion measurement across ads, analytics, and CRM reporting.
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