Why first-party data alone won’t solve marketers’ challenges

First-party data has become the go-to solution for many marketers grappling with increasing privacy regulations, continued loss of data signals and the impending deprecation of third-party cookies. 

The shift toward data directly collected from consumers makes sense. However, while first-party data holds immense value, it isn’t a silver bullet. You must understand its limitations and supplement it with other strategies to create a holistic and effective approach.

The limitations of first-party data

Scale and reach

First-party data is inherently limited to the scope of a brand’s existing customer base. While this data is rich in quality and accuracy, it doesn’t help reach new potential customers who haven’t interacted with the brand yet. For businesses looking to expand their audience and acquire new customers, relying solely on first-party data can be restrictive.

Data silos

Often, first-party data resides in various silos within an organization. Sales, marketing, customer service and other departments may all collect valuable data, but it’s rarely consolidated into a single, actionable database. This fragmentation can lead to incomplete customer profiles and disjointed marketing efforts.

Quality and accuracy issues

First-party data is only as good as the processes used to collect and maintain it. Inaccurate data entry, outdated information and incomplete records can undermine marketing efforts. Regular data hygiene practices are crucial but require significant resources and ongoing attention.

Limited behavioral insights

While first-party data provides valuable insights into how customers interact with a brand, it often lacks comprehensive behavioral data that third-party sources can offer. Understanding broader consumer behavior and preferences requires data from multiple touchpoints across different platforms and channels.

Dig deeper: The state of data in 2024: How the ad industry is adapting to privacy regulations

The need for a portfolio approach

To address the limitations of first-party data, consider a more integrated data strategy that combines first-party, second-party and third-party data.

Second-party data partnerships

Second-party data is another company’s first-party data. Businesses can access a wider pool of high-quality data through strategic brand partnerships. This approach allows for more precise targeting and a deeper understanding of shared customer bases without violating privacy concerns.

Solutions like IAB Tech Lab’s Seller-Defined Audiences are excellent examples of how brands can utilize second-party data partnerships to enhance their marketing efforts. These solutions enable publishers to define audience segments based on their own first-party data, which can then be shared with marketers in a privacy-compliant manner.

Third-party data enrichment

Despite the challenges posed by data privacy regulations, third-party data still plays a crucial role in providing broader audience insights. When used ethically and transparently, third-party data can supplement first-party data by filling in the gaps and offering a holistic view of potential customers’ behaviors and preferences.

Advanced data analytics

Leveraging advanced analytics and machine learning can help you make the most out of data. Predictive analytics, for instance, can identify patterns and trends that might not be immediately apparent, enabling more informed decision-making and personalized marketing strategies.

Unified data platforms

Investing in unified data platforms that integrate data from various sources can help break down silos and provide a single customer view. These platforms facilitate better data management, improved customer insights and more cohesive marketing efforts.

Dig deeper: Beyond the tech: Mastering customer data with a modern approach

Data provenance and regulatory challenges in modern marketing solutions

While data clean rooms and identity solutions offer innovative ways to address privacy concerns and enhance first-party data usage, they are not without challenges.

These solutions will likely face increased regulatory scrutiny as lawmakers and privacy advocates push for more stringent data protection measures. Be prepared to navigate these complexities and ensure compliance with new regulations.

A critical aspect of this evolving landscape is the need for data provenance. It’s important to know what went into a data source or synthetic ID to ensure local regulatory compliance and adherence to internal data governance policies. This includes understanding: 

  • Whether proper consent was granted for email addresses used in synthetic IDs.
  • What specific probabilistic signals (such as HTTP headers, IP addresses, or contextual signals) were used.
  • What types of data contribute to audience segments or identifiers. 
  • How consent is managed and tracked across different data sources and usage scenarios.

Getting user opt-in and consent is more critical than ever, but the traditional methods fall short. Simple notices like accepting cookies or posting a long privacy policy do not suffice in today’s privacy-conscious environment. 

You need to rethink what it truly means to obtain user consent, creating transparent, user-friendly processes that clearly explain how data will be used and provide users with meaningful choices. This involves redesigning consent interfaces and implementing compliance tools to ensure partners adhere to consent preferences throughout the data ecosystem. These tools can help track and manage consent across multiple touchpoints, verify partner compliance and provide audit trails for regulatory purposes. 

Genuine consent goes beyond compliance; it builds trust and fosters long-term customer relationships, positioning brands as responsible stewards of consumer data in an increasingly privacy-focused marketplace.

The risks of data sharing and the need for stronger relationships

Data sharing, while beneficial for enhancing insights, comes with risks. Security breaches, data misuse and potential regulatory violations are serious concerns. Be vigilant about how data is shared and with whom, as well as about every entity involved in their data ecosystem, including partners that may be one or two degrees removed from direct interaction. 

Under current laws, a brand could potentially be implicated in litigation if a partner further down the supply chain violates local regulations, even if the brand was unaware of the violation. To mitigate these risks, make sure to: 

  • Map your entire data supply chain.
  • Conduct regular audits of partners’ practices.
  • Implement strong contractual safeguards.
  • Stay informed about evolving data protection laws. 

Tools like IAB’s Diligence Platform can assist in this process by providing standardized assessments of data partners. Establishing clear data governance policies and ensuring compliance with privacy laws are essential to mitigating these risks.

Dig deeper: Breaking down data silos: Overcoming obstacles and planning for the future

content">Building stronger relationships with publishers and creating content

Given these challenges, consider returning to basics: developing stronger relationships with publishers and creating compelling content. Partnering with reputable publishers can provide access to quality audiences and valuable contextual insights. 

Many publishers now offer enhanced content marketing tools powered by AI, which go beyond simple keyword matching to assess sentiment and context more accurately. These tools enable marketers to create nuanced, relevant content that resonates with the publisher’s audience while aligning with brand objectives.

Understanding publishers’ editorial focus and collaborating on brand messaging can create more authentic and effective campaigns. Exploring sponsorships and branded entertainment also boosts visibility and engagement, using AI-driven insights for targeted, contextually appropriate campaigns.

Beyond first-party data: Embracing a diverse marketing ecosystem

While first-party data is undeniably valuable in today’s privacy-focused landscape, it’s crucial to recognize that it isn’t the ultimate or only solution to marketers’ challenges. A truly effective strategy involves looking beyond first-party data and embracing a diverse range of approaches:

  • Contextual advertising: Targeting based on content, not personal data.
  • Synthetic IDs: Machine learning-created identifiers for privacy-preserving targeting.
  • Federated learning: Gaining insights from decentralized data without exchanging it.
  • Privacy-preserving technologies: Applying various privacy-enhancing technologies such as differential privacy and homomorphic encryption for secure analysis.
  • Cohort-based marketing: Targeting groups with similar behaviors instead of individuals.
  • Zero-party data: Insights from data other than classic first-party directly shared by consumers; for example, responses to quiz or survey questions.

This comprehensive approach addresses privacy concerns and enables personalized, effective marketing. Success in the evolving digital landscape depends on adaptability and ethical data practices.

By using diverse strategies, marketers can overcome first-party data limitations, find new growth opportunities and build lasting trust. The future of digital marketing lies in combining various approaches to create robust, privacy-conscious campaigns that resonate with consumers.


Contributing authors are invited to create content for MarTech and are chosen for their expertise and contribution to the martech community. Our contributors work under the oversight of the editorial staff and contributions are checked for quality and relevance to our readers. The opinions they express are their own.


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About the author

Angelina Eng

Contributor

Having started her career in advertising in 1994, Angelina Eng rose to executive leadership roles, significantly influencing the progression of digital media, marketing, ad operations, and analytics. In her pivotal roles at renowned firms such as Morgan Stanley, Merkle, Dentsu, and Publicis, Angelina provided invaluable assistance to over 150 marketers across diverse advertising facets and played a key role in forming some of the industry standards recognized today. 

Currently holding the position of Vice President of the Measurement, Addressability & Data Center at the IAB, Angelina plays a crucial role in defining guidelines and establishing industry standards in the fields of addressability, measurement, and operations. In doing so, she is actively shaping the contemporary landscape of digital advertising.

Before her tenure at IAB, Angelina received notable awards including the AdMonsters 2018 Power List, IAB Data Rockstar 2016, and AdMonsters Digital Media Leadership Award 2016, underlining her significant impact and leadership in the field.

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