What is the highest organizational level in Meta Ads Manager that allows for setting a singular marketing objective for multiple ad sets?

The highest organizational level in Meta Ads Manager that allows for setting a singular marketing objective for multiple ad sets is the Campaign level. A Campaign is the foundational structure where you define the overarching goal for your advertising efforts, referred to as the marketing objective. This objective, such as 'Sales,' 'Leads,' 'Engagement,' or 'Traffic,' dictates the type of optimization Meta's ad delivery system will perform for all subsequent parts of that campaign. For example, if you select the 'Sales' objective for a campaign, all ad sets within that campaign will be optimized to drive purchases. While a campaign sets this singular objective, it can contain multiple Ad Sets. An Ad Set is the second organizational level, where specific parameters like budget, schedule, audience targeting (who sees your ads), and placements (where your ads appear, e.g., Facebook News Feed, Instagram Stories) are defined. Each ad set can have different targeting or budget settings, but they all inherit and work towards the single marketing objective established at the campaign level. Beneath the ad set level is the Ad level, which contains the actual creative content, such as images, videos, text, and headlines, that your target audience will see. Therefore, the Campaign level is the definitive point for establishing a unified marketing objective across potentially diverse ad sets.