Definitions

CPM – Cost per Thousand

Cost per Thousand is a pricing model where advertising impressions are purchased and companies are charged according to the number of times their ad appears per 1,000 impressions. It’s definitely a favourite form of selling ads by publishers because they get paid regardless by just displaying ads. CPM model really only makes sense if you are trying to increase brand awareness.

Impressions

This term is used to define the number of times a company’s ad will appear to its target audience. Impression could also be related to a website and the number of times the web page appear in total.

Example of how impressions work: 1 visitor could view 5 pages which would create 5 impressions. 2 visitors could view 5 pages which would generate 10 impressions.