Measuring point for external site

Use measuring point for external site, when a site set a creative and you need statistics, invoice... for the site

In that case, creative setting, exchange in in the hand of the site.
Use this type of setting for nonstandard banner formats - iLayer, preroll, DirectMail ...

How to create a banner?
How to generate external code for measuring point of external seite?
If you set a creative in BB AdServer do the following: How to generate external code for displaying?