Google Sunsetting Two Bidding Strategies In June

Google's paid advertising platform has undergone significant transformation in recent years, with the company systematically retiring legacy bidding strategies in favor of AI-powered Smart Bidding. For advertisers managing Google Ads campaigns, understanding these changes is essential for maintaining campaign performance and capitalizing on the platform's most advanced optimization capabilities.

This guide examines the sunsetting of Enhanced Cost Per Click (eCPC) and provides actionable guidance for transitioning to more effective Smart Bidding alternatives that can help maximize your return on ad spend. As part of our comprehensive paid advertising services, we help advertisers navigate these platform changes and optimize campaign performance.

Understanding Google's Bidding Strategy Evolution

Google's approach to automated bidding has evolved dramatically over the past several years. The company has progressively deprecated manual and semi-automated bidding strategies, consolidating around Smart Bidding as the primary method for optimizing campaign performance. This shift reflects Google's investment in machine learning and AI capabilities, which allow for more sophisticated real-time bid adjustments based on countless signals.

The deprecation of Enhanced Cost Per Click (eCPC) represents the culmination of this evolution. For years, eCPC served as a bridge between manual bidding and fully automated Smart Bidding, making modest adjustments to manual bids based on conversion likelihood while maintaining advertiser control over base costs. However, Google's continued investment in Smart Bidding technologies has rendered this hybrid approach redundant, as Smart Bidding now offers superior optimization capabilities without the complexity of managing manual bid floors.

The Shift Toward Smart Bidding

Smart Bidding encompasses a suite of automated bidding strategies that leverage machine learning to optimize for specific conversion goals. Unlike manual bidding or eCPC, which require advertisers to set and adjust individual bids, Smart Bidding automatically sets bids in real-time based on the likelihood of conversion. Google's algorithms analyze search context, user behavior patterns, device characteristics, time of day, and hundreds of other signals to determine optimal bid amounts for each auction.

This approach offers several advantages over traditional bidding methods. Smart Bidding can identify conversion opportunities that would be impossible for human advertisers to recognize, making micro-adjustments based on patterns learned across millions of similar auctions. The system continuously improves as it gathers more conversion data, becoming increasingly effective at predicting which clicks are most likely to deliver business outcomes.

The Deprecation Timeline

Google announced the phased deprecation of Enhanced CPC for Search and Display campaigns, with the transition completed in 2025. According to Search Engine Land's coverage of the eCPC deprecation announcement, this timeline allowed advertisers to gradually transition their campaigns while maintaining campaign continuity. During the transition period, Google provided guidance and resources to help advertisers understand their options and implement changes with minimal disruption.

The deprecation affected campaigns using eCPC across all account types and campaign configurations. Advertisers who had not proactively transitioned their bidding strategies received notifications within their Google Ads accounts, prompting them to select an alternative bidding approach. Google also provided recommendations based on each campaign's historical performance, suggesting Smart Bidding strategies that aligned with their established goals.

Understanding Your Options

For advertisers transitioning from eCPC, several Smart Bidding strategies offer comparable functionality with enhanced optimization capabilities. As documented by WordStream's comprehensive guide on the Enhanced CPC transition, the most appropriate choice depends on the advertiser's primary objective, available conversion tracking data, and willingness to embrace full automation. Our AI automation expertise can help you leverage these Smart Bidding capabilities effectively.

Transition Strategies for Success

Successfully transitioning from eCPC to Smart Bidding requires careful planning and execution. Advertisers should approach the transition as a strategic initiative rather than a simple technical change, recognizing that bidding strategy changes can significantly impact campaign performance metrics.

Preparing Your Account

Before transitioning bidding strategies, ensure your conversion tracking implementation is robust and accurate. Smart Bidding strategies rely on conversion data to optimize performance, making tracking quality a critical success factor. Review your conversion actions to confirm they accurately reflect valuable business outcomes, remove or consolidate redundant conversion definitions, and ensure conversion windows align with your sales cycle.

Account structure also plays a role in Smart Bidding success. Campaigns should be organized around coherent themes with sufficient conversion history to support automated optimization. If your account structure has become fragmented or inconsistent, consider restructuring before transitioning to Smart Bidding. Group similar keywords and ads together within campaigns, ensure each campaign has a clear objective, and consolidate campaigns that share similar goals and targeting.

Phased Implementation Approach

Rather than transitioning all campaigns simultaneously, consider a phased approach that allows for learning and adjustment. Start with campaigns that have strong conversion history and clear performance patterns, as these tend to respond most predictably to Smart Bidding changes. Monitor performance closely during the initial transition period, comparing results against pre-transition baselines to identify any concerning trends.

Gradually expand Smart Bidding adoption to additional campaigns as you build confidence in the approach. Each campaign category may require slightly different configuration based on its specific characteristics and goals. Document your findings and best practices as you progress, creating a reference for future optimization efforts.

Managing Performance During Transition

Performance fluctuations are normal during the transition from eCPC to Smart Bidding, particularly during the learning phase when algorithms are establishing new patterns. Allow sufficient time for the system to gather data and optimize--typically two to four weeks for campaigns with conversion history, though new campaigns may require longer periods. Avoid making additional significant changes during this period, as multiple simultaneous changes can obscure the impact of the bidding strategy transition.

Monitor key performance indicators closely during the transition, focusing on conversion volume, cost per conversion, and overall return on ad spend. Some fluctuation in these metrics is expected and does not necessarily indicate problems with the Smart Bidding configuration. However, significant or persistent declines warrant investigation and potential adjustment.

Maximizing Smart Bidding Effectiveness

Once successfully transitioned, ongoing optimization can further improve Smart Bidding performance. Several best practices help ensure Smart Bidding strategies continue to deliver strong results over time.

Leveraging Performance Max and Automated Assets

Performance Max campaigns represent Google's most advanced automated bidding and creative solution, combining Smart Bidding with automated ad creative generation and audience targeting. As noted in ALM Corp's Google Ads 2025 Year-in-Review, Performance Max offers a comprehensive approach that reduces manual management while leveraging Google's full AI capabilities. The campaigns automatically allocate budget across Google inventory including Search, Display, YouTube, Gmail, and Discover based on where conversions are most likely to occur.

Even advertisers who prefer more controlled campaign types can benefit from automated asset generation within Search and Performance Max campaigns. Responsive search ads and dynamic ad insertion features allow Google's systems to test and optimize creative combinations at scale, complementing Smart Bidding optimization with automated creative testing.

Audience Signals and Custom Intent

Smart Bidding effectiveness can be enhanced through the strategic use of audience signals and custom intent audiences. These features allow advertisers to provide hints about their ideal customers without restricting auction eligibility, helping Smart Bidding algorithms prioritize high-value segments while maintaining broad reach. Customer match lists, similar audiences, and in-market audiences can all serve as signals that inform bid adjustments for users likely to convert.

Common Transition Challenges and Solutions

Insufficient Conversion Data

One of the most common challenges advertisers face when transitioning to Smart Bidding is insufficient historical conversion data. Smart Bidding algorithms require a minimum volume of conversions--generally at least 30 conversions per month--to establish reliable optimization patterns. Campaigns that haven't yet generated adequate conversion history may need additional time or targeted optimization before transitioning.

For campaigns with limited conversion data, consider using Maximize Clicks as an interim strategy to generate traffic and accumulate conversion history. Alternatively, implement enhanced conversions or expand conversion tracking to capture micro-conversions that can supplement primary conversion data. Some advertisers have found success using value-based conversion tracking with estimated values for actions that don't directly generate revenue.

Maintaining Control During Transition

Advertisers accustomed to manual bidding may feel uncomfortable surrendering bid control to automated systems. While Smart Bidding does remove direct bid management, several features allow advertisers to maintain influence over automation. Portfolio bid strategies allow grouping campaigns with similar objectives, applying shared constraints and performance targets. Bid adjustments based on device, location, schedule, and audience can still be applied, allowing advertisers to communicate preferences while Smart Bidding handles base optimization.

Addressing Performance Declines

If Smart Bidding performance significantly underperforms expectations, several troubleshooting steps can help identify and resolve issues. First, verify that conversion tracking is properly implemented and that conversion data is being accurately recorded. Check for any recent changes to conversion definitions or tracking implementation that may have disrupted data continuity.

Review account changes during the Smart Bidding learning period to ensure no conflicting modifications were made. Examine search term reports to identify any irrelevant traffic that may be consuming budget without converting. Finally, consider whether bid ceiling or floor settings may be constraining Smart Bidding effectiveness, and adjust these constraints if they appear to be limiting optimization.

Looking Ahead: The Future of Automated Bidding

Google's continued investment in AI and machine learning suggests that Smart Bidding capabilities will continue to evolve and improve. Future developments may include more sophisticated value optimization, enhanced integration with first-party data, and increasingly personalized bid adjustments based on individual user patterns.

Advertisers who master Smart Bidding today will be well-positioned to adopt new capabilities as they emerge. The fundamental principles--robust conversion tracking, clear campaign objectives, and willingness to embrace automation--will remain relevant regardless of specific feature changes. By understanding the strategic context behind Google's bidding strategy evolution and building proficiency with current Smart Bidding tools, advertisers can ensure their paid search programs remain competitive as the platform continues to advance.

Key Takeaways

The sunsetting of Enhanced CPC marks a significant milestone in Google's push toward fully automated advertising. For advertisers, this transition presents both challenges and opportunities. Success requires understanding the available Smart Bidding alternatives, preparing accounts with robust conversion tracking, and approaching the transition as a strategic initiative rather than a simple technical change.

By selecting appropriate Smart Bidding strategies based on campaign objectives, implementing transitions thoughtfully, and continuing to optimize based on performance data, advertisers can maintain and often improve campaign performance while benefiting from Google's most advanced optimization capabilities. The key is embracing automation while maintaining the strategic oversight necessary to ensure automated systems align with business objectives.

Sources

1. Search Engine Land - Google Ads to Deprecate Enhanced CPC - Official announcement and timeline
2. WordStream - Enhanced CPC in Google Ads Is Going Away - Comprehensive transition guide
3. WordStream - 11 Biggest Google Ads Updates of 2025 - Current Smart Bidding landscape
4. ALM Corp - Google Ads 2025 Year-in-Review - Smart Bidding strategy details