Which option is NOT a key aspect of optimizing a campaign?

Setting a fixed budget is not a key aspect of optimizing a campaign because optimization relies on flexibility and adaptability in response to performance data. When optimizing a campaign, it is crucial to monitor real-time performance metrics, making adjustments to strategies as needed to enhance effectiveness. This often entails reallocating budget resources to better-performing channels, tactics, or audience segments, rather than sticking to a predetermined budget that may not align with campaign goals.

On the other hand, monitoring performance regularly, adjusting strategies based on data, and implementing changes based on insights are essential components of optimization. Each of these activities emphasizes the importance of being responsive to the dynamics of the campaign environment, allowing marketers to fine-tune their approach continuously for improved results.