GA4: Definition > Conversions

A conversion is an important interaction that you want your visitors/users to complete.

Conversions can be split into micro and macro conversions.
An example of a micro-conversion can be a newsletter subscription, etc.

• Micro conversions are usually described as conversions that put your visitors/users one step closer to the main (macro) conversion.
• Macro-conversions are the most important interactions, such as a purchase.

By tracking conversions, we could better understand what is working for our business and what is not. 
Also, conversions are used to measure the effectiveness of advertising campaigns.