Iris is under-spending on their Sponsored Brands campaign that showcases their camera line. What could they do to optimize their campaign?

To optimize an under-spending Sponsored Brands campaign, Iris should increase bids on high-performing keywords. This allows their ads to compete more effectively for valuable placements, driving more impressions and clicks for terms already proven to convert. Additionally, adding more relevant keywords can expand the campaign's reach and visibility, capturing a wider audience interested in their camera line. Simply leaving the campaign alone is not an optimization strategy and would not address the under-spending issue. While adding more keywords is beneficial, increasing bids on existing high-performers directly addresses the under-spending by maximizing the impact of already effective targeting.