Deteriorating CPA Issues
2026-01-20 00:40:13

Understanding the Underlying Issues of Deteriorating CPA in Digital Advertising

Deciphering the True Causes Behind Deteriorating CPA



In recent years, companies have increasingly invested in digital advertising, only to find their Cost Per Acquisition (CPA) worsening without clear reasons. Many organizations struggle to pinpoint the cause despite their ongoing optimization efforts, leading to concerns about wasted resources and ineffective strategies. The complexities contributing to this phenomenon include:

  • - AI Mislearning: In the realm of digital advertising, AI relies heavily on data inputs. If the data used in training these AI algorithms is flawed, it can lead to significant misjudgments in targeting and strategy.
  • - Ad Fraud: This includes issues related to fraudulent traffic and conversions, which distort true performance metrics and waste marketing budgets.
  • - Deteriorating Creative Quality: Over time, advertisements may become monotonous or fail to engage users, resulting in reduced user interaction and effectiveness. This phenomenon highlights the need for fresh creative approaches that resonate with target audiences.

In our upcoming free online webinar, “What is Happening Behind the Scenes of Deteriorating CPA? Understanding AI Mislearning, Ad Fraud, and Brand Risk Indicators,” we aim to demystify these challenges. Scheduled for January 29, 2026, from 11:00 AM to 12:00 PM, the session will address how to identify signs of CPA deterioration and clarify where businesses should focus their improvement efforts. Live streaming will also be available, with archived content accessible on January 30 and February 4.

Webinar Overview



This webinar will delve into three key perspectives:

1. AI Advertising and Data Design: The first segment will explore how incorrect data transfer in AI tools like P-MAX can lead to mislearning. We will cover essential adjustments businesses can make to their data strategies to prevent CPA deterioration, led by the team from Intimate Merge.

2. Understanding Ad Fraud: The second segment will unveil the hidden losses caused by ad fraud. We will provide insights into how fraudulent traffic and conversions can contaminate AI learning, leading to unnecessary ad spend. Strategies and real-life examples of countering ad fraud will be discussed, presented by Spider Labs.

3. Creative Quality Assessment: The final segment will assess the signs of creative fatigue and user experience degradation. Understanding how these factors subtly reduce conversion rates and learning how to effectively revitalize ad content will be key, presented by Galapagos.

Who Should Attend


  • - Those experiencing a decline in CPA without clear indications of causes.
  • - Individuals who feel that AI advertising, particularly in P-MAX, has become a black box.
  • - Marketers seeing high click rates but low conversion success.
  • - Brands looking to reassess the quality of their ads and address brand risk concerns.

About Spider Labs


Spider Labs, headquartered in Minato City, Tokyo, specializes in the development and operation of solutions combatting ad fraud through its tool, Spider AF. Since its establishment in April 2011, the company has been dedicated to enhancing marketing security against challenges like reselling, fraudulent leads, and affiliate risks. For more information about the webinar and to register, please visit the official registration page.

Join us in uncovering the complex landscape of digital advertising and fortifying your strategies against rising challenges!


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Topics Consumer Technology)

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