Optimisation of promotion and ad portfolio

Regarding the selection of the most adequate items for promotional use there are two key questions to be focussed on:

What kind of item ...

• can be sold especially well by means of advertisement?
• produces the effect that more of the non-advertised items will be sold (cross-selling-analysis) ?

The cross-selling-effect ...

• is definitely of higher significance than the sole promotional effect of an item – with profit focussed onto.
• will be isolated by means of complex analyses.
• facilitates a profit-optimal selection of prospective promotional items.