← DictionaryConversion
A visitor completing the action a page or campaign was built to produce.
They did the thing you wanted.
What It Is
Conversion is a Marketing item. Stated plainly: a visitor completing the action a page or campaign was built to produce.
It is an idea you reason with rather than a deliverable you hand over, so two teams can both hold it correctly and still apply it differently. Once it is defined that clearly, arguments about it usually stop.
How It's Used
In practice, Conversion shows up in campaign planning, channel choices and the reporting that follows them. It normally appears alongside Conversion Rate, Call to Action and Landing Page. The practical test is whether a decision changes because of it.
Why It Matters
Conversion is one of those items that only becomes visible when it is missing. When it is unclear, spend keeps moving but nobody can say what it bought. Clarity here removes a surprising amount of downstream argument.
Think of it as a lens. Look through it and some choices get obvious. They did the thing you wanted.
Termshift™
How the meaning shifts depending on who is using it, and where.
Professionally, Conversion carries the narrow meaning: a visitor completing the action a page or campaign was built to produce.
Explained to someone with no marketing background, Conversion is they did the thing you wanted.
The Bottom Line
If you only keep one thing about Conversion: they did the thing you wanted. Everything after that is detail.