When we hear or see SEM and we have basic knowledge we think about the following:
Paid search ads
Paid search advertising
PPC (pay-per-click) *
PPC (pay-per-call) – some ads, particularly those served to mobile search users, may be charged by the number of clicks that resulted in a direct call from a smartphone.
CPC (cost-per-click) *
CPM (cost-per-thousand impressions) *
Most search ads are sold on a CPC / PPC basis, but some advertising options may also be sold on a CPM basis.
Why SEM is important?
