A digital marketing manager for a large retailer manages a fully flexible budget for theircampaigns. Which best practice should they follow in order to maximize results from their flexible budget?

Cap budgets at the average daily spend to eliminate unnecessary budget usage during seasonal periods. 

Use shared budgets and portfolio bid strategies to maximize campaign flexiblity and allow AI to do its work. 

Create a separate budget for campaign experiments and unforeseen market changes.

Adjust performance targets monthly or quarterly to optimize AI-driven solutions.