Which Billing event may best serve an advertiser looking to reach a broader audience?

The billing event that would best serve an advertiser looking to reach a broader audience is CPM, or Cost Per Mille (which translates to cost per thousand impressions). This model is focused on exposure and impressions, making it effective for campaigns aimed at brand awareness and reaching a larger audience.

When an advertiser uses CPM, they pay for the number of times their ad is shown, regardless of whether users engage with the ad. This is ideal for advertisers who want to maximize visibility and reach as many users as possible, which is often the goal when targeting a wider audience. The CPM model allows for more ad impressions, thereby increasing the chances of brand recognition among a larger group of potential customers.

In contrast, other billing events like CPA (Cost Per Action) focus on conversions, CPC (Cost Per Click) emphasizes driving specific clicks, and CPV (Cost Per View) centers around video views. While these may be effective for engagement or specific user actions, they do not prioritize broad exposure like the CPM model does. Therefore, if the main objective is to reach a wider audience, CPM stands out as the most suitable option.