What is the difference between CPM, CPC and CPV bidding?

CPM : Cost Per Thousand is the amount you pay per thousand impressions that you receive, regardless of the number of clicks you receive.

CPC : Cost Per Click is the amount you pay for each click.

CPV: is when advertisers pay for each unique user view of an advertisement or website.

It is used more on video marketing such as YouTube campaigns.

CPM = Cost per thousand Impressions
CPC = Cost per Click
CPV = Cost per View

1) CPM - Cost-per-thousand impressions (CPM): Definition

A way to bid where you pay per one thousand views (impressions) on the Google Display Network.

2) CPC - Cost-per-click (CPC): Definition

Cost-per-click (CPC) bidding means that you pay for each click on your ads. For CPC bidding campaigns, you set a maximum cost-per-click bid - or simply "max. CPC" - that's the highest amount that you're willing to pay for a click on your ad (unless you're setting bid adjustments, or using Enhanced CPC).

3) CPV - About cost-per-view (CPV) bidding
Cost-per-view (CPV) bidding is the default way to set the amount you'll pay for TrueView video ads in Google Ads. With CPV bidding, you'll pay for video views or interactions (such as clicks on call-to-action overlays, cards, and companion banners).