Google today announced three significant changes to its Google Ads bidding and budgeting infrastructure, with the most consequential taking effect on August 17, 2026. The package covers an expansion of Smart Bidding Exploration to Performance Max and Shopping campaigns, a beta launch of promotion mode for managing demand spikes, and a backend change to how the platform handles campaigns limited by budget that use target-based bid strategies.

The announcement was made by Ginny Marvin, Ads Product Liaison at Google, via LinkedIn, and is accompanied by a formal post on the Accelerate with Google blog. It arrives weeks after Google Marketing Live 2026, which had flagged several of these features as forthcoming - the GML coverage on PPC Land noted that bidding and budgeting changes were among the most anticipated follow-ups from the May 20 event.

Smart Bidding Exploration has been available for Search campaigns since 2024, where it works by allowing advertisers to set a ROAS tolerance that widens the acceptable range of return on ad spend. That tolerance gives the algorithm room to bid on queries with plausible but unproven conversion histories - traffic the campaign would otherwise skip. The mechanism targets queries that fall outside established performance patterns, using the additional headroom to explore whether they convert.

According to Google, campaigns using Smart Bidding Exploration see on average a +18% increase in unique search query categories with conversions, and a +19% increase in conversions overall. Those figures come from Google internal data covering March 11, 2025 to April 11, 2025, and Google notes that actual results will vary by advertiser. The March 2026 Ads Decoded episode covered by PPC Land had described Smart Bidding Exploration as restricted to Search campaigns using a target ROAS strategy - a constraint that today's announcement directly addresses.

The expansion today takes two forms. First, Smart Bidding Exploration is now available globally in all languages for all Performance Max campaigns without a product feed. This is described as graduating from its earlier beta status at Google Marketing Live. Second, a new beta is opening for Shopping ads - specifically, on both Performance Max campaigns with a product feed and on standard Shopping campaigns. According to Google, the Shopping beta is available for those who want "the benefits of exploration in more areas than text ads."

The distinction between the two tracks matters. Performance Max campaigns without a product feed are the first group to receive full global availability. Performance Max campaigns with a product feed and standard Shopping campaigns are entering beta now, which means access is more limited and formal results data is not yet published. PPC Land's May 7 analysis had noted that the Shopping expansion addresses a gap that Shopping advertisers observed since Smart Bidding Exploration launched on Search, with the open question being whether ROAS tolerance expansion on product queries produces useful traffic diversification or simply introduces irrelevant impressions.

For Shopping and Performance Max with product feeds, the query landscape differs structurally from text search. Product queries tend to be more price-sensitive and category-driven. Whether the exploration mechanism translates effectively across that inventory type is something the beta period is designed to test.

Promotion mode: temporary ROAS and budget changes for peak periods

The second announcement is a beta launch of promotion mode, a feature designed to handle periods of elevated demand - flash sales, seasonal events, product launches - without requiring advertisers to manually restructure campaigns.

Promotion mode lets advertisers schedule temporary changes to their ROAS tolerance and add extra daily budget during defined date ranges. According to Google, the feature is "compatible with daily budgets" and the ROAS tolerance adjustment "can also be combined with campaign total budgets." That combination matters: campaign total budgets became available for Search, Performance Max, and Shopping campaigns in January 2026, and promotion mode's compatibility with that format means advertisers who adopted the total budget model for fixed-spend periods can now also schedule temporary performance accelerations within those constraints.

The beta is available today for Search and Performance Max campaigns.

Practitioners commenting on the LinkedIn announcement drew a direct comparison to seasonality adjustments - an existing Smart Bidding tool that signals expected changes in conversion rates. The distinction, as noted in the thread by Georgi Zayakov and confirmed by Anita Kori, is that seasonality adjustments signal higher or lower expected conversion rate, whereas promotion mode adjusts the ROAS tolerance directly and also injects additional budget. Google had already expanded seasonality adjustments to App campaigns in beta in September 2025, but that feature remains structurally different from what promotion mode introduces.

Promotion mode does not replace seasonality adjustments. The two tools operate on different levers: conversion rate expectations versus ROAS tolerance and spend capacity. Advertisers running Search and Performance Max campaigns can now use both tools in parallel, though the interaction between the two signals during the same period is not addressed in the current documentation.

For practitioners who manage Black Friday, back-to-school, or single-day sale campaigns, the scheduling capability is the operationally significant element. Rather than manually updating ROAS targets and budgets at the start of a peak period - a process that introduces human error and requires real-time attention - promotion mode allows those changes to be configured in advance with a defined start and end date.

The August 17 bidding target change: what it is and why it matters

The third and most structurally significant announcement is a backend change to how Google handles budget-limited campaigns that use target-based bid strategies. According to Google's Help Center documentation, the change takes effect on August 17, 2026.

The current behavior: when a campaign has a "Limited by budget" status and uses a Target CPA or Target ROAS strategy, the system may allow actual performance to exceed the stated target. A campaign with a Target CPA of $10, for example, might regularly deliver conversions at $5. When the advertiser then increases the budget, the bidding system may produce performance fluctuations - the over-performance effectively masked a tension between the real efficiency floor and the stated target.

After August 17, campaigns in this situation will be optimized more consistently toward the stated target, including when budgets change. According to Google's Help Center, "campaigns that are limited by budget that use a target-based bid strategy will more consistently perform toward your bid target, including when you make budget adjustments so you can grow your campaigns with more predictable performance."

The affected campaign types span a wide range: Search, Shopping, Performance Max, Demand Gen, Travel, and Display. App campaigns, Video reach campaigns, and Video view campaigns are explicitly excluded and will continue using previous bidding behavior. Hotel and Display campaigns, according to the documentation, already operate with the new behavior.

Platform availability for the change includes Google Ads, Search Ads 360, Display and Video 360, Google Ads Editor, and the Google Ads API.

The Bid Target Adjustment Tool

To manage the transition, Google is introducing a new tool called the Bid Target Adjustment Tool, available in Google Ads starting July 6, 2026. The tool is triggered by account notifications sent to advertisers whose campaigns were limited by budget in the last 12 months and use a target-based bid strategy affected by the upcoming changes.

Within the tool, advertisers can review historical campaign performance and choose from three actions. The first is keeping the current target unchanged. In that case, campaigns that were over-performing their targets will begin delivering closer to the set target after August 17. If a campaign had a Target CPA of $10 but was delivering at $5, it will move toward $10. The second option is adjusting the target in line with recent performance - for example, lowering the Target CPA from $10 to $5 to preserve current efficiency. The third is setting a custom target that reflects business goals rather than recent delivery.

Advertisers can also switch bid strategy entirely. Switching to Maximize Conversions or Maximize Conversion Value removes the target constraint and optimizes for volume at the full budget, though that introduces variability in CPA and ROAS as budgets change.

Google will not automatically adjust targets or budgets. Action is required from advertisers who want to maintain performance efficiency for campaigns that have been over-delivering against their stated targets.

Why over-performing campaigns require attention before August 17

The practical risk is most acute for campaigns where actual performance significantly exceeds the stated target. If a campaign runs a Target ROAS of 200% but consistently delivers 400%, the advertiser may have become accustomed to that level of return. After August 17, the system will pull delivery toward 200%, meaning the same budget may produce substantially less efficient results if the target is not updated beforehand.

Google's guidance is specific: review all campaigns with a "Limited by budget" status and target-based strategies, compare stated targets to recent actual performance, and update targets to reflect business goals ahead of the deadline. The notification system starting July 6 is designed to surface those mismatches, but the tool only flags and assists - it does not act automatically.

PPC Land's March 2026 analysis of budget pacing changes documented how adjustments to campaign budgets interact with Smart Bidding optimization windows, noting that conversion cycles of two to four weeks are common in niche B2B segments. The same dynamic applies here: advertisers who update targets in advance of August 17 should expect a brief re-optimization period before performance stabilizes around the new parameters. Google's documentation suggests waiting one to two conversion cycles after any budget increases to evaluate performance under the new conditions.

Context within the broader bidding roadmap

These three features represent the consumer-facing output of a sustained bidding infrastructure investment. PPC Land's coverage of the May 7 pre-GML announcement noted that Google had shipped more than 20 improvements to Search and Shopping bid strategies since 2025. Today's release adds three more to that sequence.

The Google Ads Editor 2.11 release in November 2025 had introduced Smart Bidding Exploration as an opt-in feature for Search campaigns, which marked the first time the feature appeared in a desktop management interface. Today's extension to Performance Max and Shopping continues that expansion - moving Smart Bidding Exploration from a specialist Search tool toward a platform-wide capability.

The promotion mode beta addresses a gap that practitioners had identified alongside seasonality adjustments. Sixty-five percent of advertisers used seasonality adjustments for Black Friday sales according to PPC Land's October 2024 coverage, which indicated strong market adoption of the existing tool. Promotion mode layers in budget scheduling on top of that, giving cross-channel marketers a single interface for coordinating peak-period spend and ROAS strategy simultaneously.

The August 17 bidding target change is the least discretionary of the three. It is a platform-level shift that affects budget-limited campaigns regardless of whether advertisers opt in. For practitioners running accounts at scale, the July 6 notification window provides approximately six weeks to review affected campaigns, update targets, and prepare for the recalibration period.

Jyll Saskin Gales, described as Google Ads Coach in the LinkedIn thread, called the SBE expansion to PMax "a welcome update" and said she is "really looking forward to testing Promotion Mode." Regarding the August 17 change, she noted being "cautiously optimistic" but sought additional context on what specifically is changing on the backend.

The practical question the industry is now working through - visible in the LinkedIn thread comments - is whether campaigns currently over-achieving their targets represent deliberate strategic choices or simply targets that were never updated to reflect system performance. For accounts where the over-performance is intentional, the pre-August-17 window is the only opportunity to lock that efficiency in before the platform enforces a stricter relationship between stated targets and actual delivery.

Timeline

Summary

Who: Google Ads, affecting all advertisers running Search, Shopping, Performance Max, Demand Gen, Display, and Travel campaigns globally. Announced by Ginny Marvin, Ads Product Liaison at Google, via LinkedIn and the Accelerate with Google blog.

What: Three updates to Google Ads bidding and budgeting infrastructure: (1) Smart Bidding Exploration expanded globally to Performance Max campaigns without a product feed, and opened in beta for Performance Max campaigns with product feeds and Shopping campaigns; (2) promotion mode launched in beta for Search and Performance Max campaigns, allowing scheduled ROAS tolerance adjustments and extra daily budget during defined peak periods; (3) a backend bidding target optimization change effective August 17, 2026, that will cause budget-limited campaigns using Target CPA or Target ROAS to deliver more consistently toward their stated targets.

When: Announced June 15, 2026. The Bid Target Adjustment Tool becomes available July 6, 2026. The bidding target optimization change takes effect August 17, 2026.

Where: Google Ads platform, with platform availability for the August 17 change spanning Google Ads, Search Ads 360, Display and Video 360, Google Ads Editor, and the Google Ads API.

Why: Google's stated rationale is predictable performance at scale. Smart Bidding Exploration targets new converting traffic from queries campaigns are not currently winning. Promotion mode addresses the operational challenge of manually adjusting campaigns during peak-demand periods. The August 17 change is designed to resolve a structural inconsistency in which budget-limited campaigns over-deliver against their targets, causing performance fluctuations when budgets are increased - making target-based bid strategies less reliable for scaling.