Which factor is crucial in determining the targeting strategy for a campaign?

Identifying the target audience's demographics and behaviors is fundamental when developing a targeting strategy for a campaign. Understanding who the audience is—such as their age, gender, interests, location, and online behaviors—allows marketers to tailor their messages and choose the most effective platforms for reaching that audience.

Targeting based on demographics ensures the ad content resonates well with the intended customers, ultimately improving engagement, conversion rates, and return on investment. By focusing on the specific needs and preferences of the audience, advertisers can avoid wasting resources on those who are unlikely to be interested in their offerings.

While factors like ad creative style, campaign duration, and the number of ad placements do play roles in overall campaign effectiveness, they are secondary to knowing the target audience. Without a solid understanding of the audience, the other factors may not yield the desired results, as the campaign could miss its mark entirely.