Bulk sheets are recommended to manage:

Bulk sheets are a powerful tool for managing Amazon DSP campaigns efficiently. They are highly recommended for both campaign creation and campaign optimization. For campaign creation, bulk sheets allow you to quickly set up multiple campaigns, line items, and creatives simultaneously by populating a spreadsheet with all necessary details. This saves significant time compared to creating each component individually through the UI. For campaign optimization, bulk sheets enable you to make mass changes to existing campaigns, such as adjusting bids, budgets, or targeting parameters across many line items at once. This streamlines the optimization process, making it easier to react to performance trends and improve campaign effectiveness.