How the Bid Change Rule Impacts Search Terms in Amazon Campaigns

Every profitable Amazon campaign starts with understanding what your customers are actually searching for. Search terms, not keywords, are the most accurate reflection of real-time shopper behavior—and they often hold the key to unlocking wasted spend, inefficient targeting, and missed growth opportunities.

But manually monitoring thousands of search terms, identifying patterns, and adjusting bids in response is not just time-consuming. It’s impossible to scale. That’s where SellerApp’s search term-based bid automation comes in. This rule-based automation lets sellers dynamically adjust bids, eliminate underperforming terms, and scale high-performing ones—based entirely on actual performance data, not guesswork.

It’s not just another rule engine. It’s a way to bring intelligent automation into your daily ad operations, with full control over conditions, targets, and actions. This is applied at the most granular level available in your Amazon Ads account.

In this article, we’ll break down how the automation works, how to set it up, and how to use it to drive efficiency, profitability, and scale—without the constant need for manual intervention.

Why Focus on Search Terms?

Search terms represent the exact queries customers type into Amazon. Unlike keywords (which you target), search terms reflect real-time shopper intent. Monitoring how these terms perform gives you precise insight into what’s actually driving traffic—and whether that traffic is profitable.

By applying bid change rules to search terms, you’re optimizing at the most granular level possible.

How the Search Term-Based Bid Change Rule Works

This automation works by monitoring search term performance across selected manual campaigns. Based on predefined conditions, actions are automatically taken on the search terms that meet your criteria.

Here’s how to set it up step-by-step:

1. Select Manual Campaigns

Begin by choosing one or more Manual Campaigns you want to include in this automation. You can select individual campaigns or apply the rule to all enabled manual campaigns.

2. Include Future Campaigns (Optional)

To future-proof your setup, check the box:

 “Include future campaigns to this automation”

This ensures that all future manual campaigns will automatically inherit this rule. (Note: This applies only if you’re targeting all enabled manual campaigns.)

3. Set Conditions Based on Search Term Performance

The rule only applies to Search Terms, not keywords or product targets directly. You can create conditions using key performance metrics like:

• ACoS

• Clicks

• Orders

• ROAS

• Spend

• CTR

Example condition:

“If ACoS > 50% and Clicks > 10 in the last 14 days”

4. Choose an Action

Once the condition is met, select one of the following Search Term-specific actions:

Increase Bid

Boost your visibility on high-performing search terms. When selected, a new target will be created based on the qualifying search term with an increased bid.

Decrease Bid

Lower your bid for search terms that are underperforming to improve cost-efficiency. A new target will also be created here, but with a reduced bid.

Negative Targeting

Automatically negate poorly performing or irrelevant search terms that are draining ad spend. This prevents your ad from showing again for those queries.

Important: For Increase/Decrease Bid actions, the rule will create a new keyword or target mapped to the qualifying search term with the adjusted bid.

 Benefits of Search Term-Based Bid Automation

• Precision Optimization: Target exactly what works—and eliminate what doesn’t.

• Scalable Control: Apply across multiple campaigns and include future ones automatically.

• Time Efficiency: No need to manually analyze and adjust bids for thousands of search terms.

• Smarter Bidding: Automatically increase or decrease bids based on actual shopper behavior.

 Best Practices for Using This Rule

• Set realistic performance thresholds (e.g., combine clicks with ACoS or orders for reliable data).

• Use negative targeting for terms with high spend and zero conversions.

• Review newly created targets periodically to fine-tune bid amounts.

• Combine this rule with Search Term Isolation strategies to build exact match campaigns around top performers.

Ready to get started?

Search term-based bid change rules give Amazon sellers an unprecedented level of control and automation. 

By acting only on real shopper behavior, you can make more precise bid adjustments, cut out wasted spend, and scale what’s working. You can do this all while saving hours of manual work.

If you’re serious about performance-driven growth, this automation should be a core part of your Amazon advertising strategy.