Contoso Cameras is setting up a new Smart Shopping campaign. What is the recommended amount of time they should keep their Return On Advertising Spend (ROAS) target as-is during the algorithm's learning period?

The selected answer option, 3 Weeks, is correct because it is recommended to keep the Return On Advertising Spend (ROAS) target unchanged for approximately 3 weeks during the algorithm's learning period when setting up a new Smart Shopping campaign. This time frame allows the system to gather enough data and learn from the performance of the campaign to optimize the bids and targeting effectively. Adjusting the ROAS target too early could disrupt this learning process and prevent the system from making the most accurate adjustments to maximize campaign performance. Therefore, maintaining a stable ROAS target for about 3 weeks helps ensure the algorithm can make well-informed decisions and improve the overall effectiveness of the campaign.