To set your CPM Optimisation Goal, you should look into what market(s) you are advertising to. Below you find our minimum recommendations for each specific market:

EU  - $3
America - $2
South America - $1.5
Central America - $1.5
Asia - $1.75
Caribbean - $2.5
Africa - $2.25
Oceania - $1.75
Middle East - $3
UAE - $3

If you plan to target multiple markets, you should choose the highest minimum CPM Optimisation Goal of those markets. 

The AI will look for lower prices than your set goal. A low goal will only limit the campaign

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