Which targeting method is better suited to help authors stay on top of search trends and discover new keywords that are generating clicks and sales?

Automatic targeting is better suited for discovering new keywords and staying on top of search trends because it allows Amazon's algorithms to automatically target relevant search terms and products based on your ad content and landing page. This broad approach helps uncover unexpected, high-performing keywords that you might not have considered with manual targeting. Manual targeting, while offering precise control over chosen keywords, requires you to proactively research and select keywords, making it less effective for discovering new, emerging trends.