As you may already be aware, the digital marketing landscape is undergoing a significant change with the phasing out of third-party cookies.

Major web browsers across both the web and on mobile devices have begun to block these tracking mechanisms, responding to growing concerns about user privacy.

In particular, you should note that Google has announced plans to eliminate third-party cookies in Chrome, which as of early 2024, has started affecting a small percentage of users which is said to be currently 1%.

You can read Google’s official announcement here

Faced with this shift, you might be considering viable alternatives to maintain data-driven marketing efforts. So it’s key that you understand the new tools and techniques that are surfacing to fill the gap left by third-party cookies.

These alternatives are not just quick workarounds but are being designed to respect user privacy while still providing advertisers with valuable data and insights.

One such alternative is the use of first-party data collected directly from your own digital properties. This provides a wealth of information, although it requires a robust strategy to collect, manage, and activate this data effectively.

Other emerging solutions include universal IDs and privacy-centric approaches like Google’s Privacy Sandbox, which aims to deliver personalised advertising without compromising user confidentiality. Adapting to these methods will be crucial for your campaigns to remain effective in the new privacy-focused landscape.

What Are the Alternatives to 3rd Party Cookies in 2024

First-Party Data Collection

As a site owner, collecting data directly from your users offers greater control and compliance with privacy regulations.

Site-Centric Analytics

To effectively understand user behaviour, your website can employ analytics tools that track interactions such as clicks, page views, and session duration. This data, gathered without involving any external parties, could include:

  • User engagement: Monitoring how long users stay on your site and which pages they visit.
  • Traffic sources: Identifying how users find your site, whether through direct entry, search engines, or referral links.

These insights from tools such as GA4 enable you to tailor the user experience and make informed decisions regarding content and design.

Customer Relationship Management

Using a Customer Relationship Management (CRM) system, you can collect and manage comprehensive information about your customers, including:

  • Personal details: Such as name, email, and contact information.
  • Interactions: Records of customer service communications, purchase history, and preferences.

This subsection of First-Party Data Collection allows for personalised marketing campaigns and improved customer service, establishing a strong data foundation for your business strategies.

Server Side Tracking

Server-side tracking is a method where data is collected directly through web servers rather than relying on the client’s browser. This shift affords you more control over what information is gathered and how it is handled.


  • Data Control: Your data remains under your purview, which can help with compliance to various privacy regulations.
  • Improved Accuracy: Reduces reliance on browsers that can block or manipulate cookie data, resulting in more reliable analytics.
  • SEO: Server-side tracking offers significant SEO benefits by improving website speed and user experience, which can have a positive impact on search rankings

How It Works:

  1. A user interacts with your website.
  2. Data about this interaction is sent to your server.
  3. Your server processes this information and sends it to your analytics platform.


  • Performance: Ensure your server can handle the additional load of processing analytics data.
  • Complexity: Setting up server-side tracking may require technical expertise.
  • Privacy: Must still comply with data protection laws, but you have more control over personal data.

Entering the server-side tracking space can bring about a subtle but impactful shift in how your website’s user data is managed.

Privacy-Preserving Advertising Technologies

Privacy-preserving advertising technologies provide ways to deliver relevant adverts without compromising your privacy. These solutions rely on processing user data in aggregated or anonymised forms.

Federated Learning of Cohorts

Federated Learning of Cohorts (FLoC) allows you to experience personalised advertising by grouping you with users of similar browsing habits, rather than relying on your individual data.

Your browsing history is never shared with servers; instead, an algorithm identifies your interests and assigns you to a cohort with shared interests.

  • Key Features:
    • Privacy-focused: Groups users, keeping individual data private.
    • Browser-based: Works directly within your browser.

Privacy Sandbox

Privacy Sandbox is a collection of proposals designed to ensure your privacy online while allowing content creators to be funded. The aim is to create a more secure web where your data is better protected.

  • Key Components:
    • Trust Tokens: Designed to combat fraud and distinguish between bots and real users without exposing your identity.
    • Conversion Measurement API: Allows measurement of conversion rates of adverts without linking information to you.


  • Helps to protect your online identity.
  • Delivers relevant adverts without individual tracking.

Universal Identifiers

Universal identifiers are becoming a key solution for ad tracking without relying on third-party cookies. They offer a new method of recognising users while respecting privacy.

Unified ID Solutions

Unified ID solutions are a set of tools that provide advertisers with the ability to identify and target audiences in a privacy-conscious manner.

Trade Desk’s Unified ID 2.0, for example, is a notable system in this area. It uses encrypted and hashed emails, with user consent, to create a consistent identifier across different websites. This allows for personalised advertising while giving users control over their data.

These IDs are designed to be:

  • User-centric: Ensuring that consent and privacy are at the forefront.
  • Interoperable: Working across various platforms and publishers.

People-Based Identifiers

People-based identifiers link online user data with anonymised, real-world identifiers, such as hashed email addresses or phone numbers. These systems enable advertisers to target ads to users across devices and platforms.

Key players in this field include LiveRamp ATS and Mercury Project by MediaMath, which both emphasise the use of first-party data provided directly by users. The attributes of people-based identifiers include:

  • Privacy compliance: Adhering strictly to privacy regulations and user consent.
  • Cross-device reach: Allowing consistent user identification across multiple devices.
What Are the Alternatives to 3rd Party Cookies in 2024

Customer Data Platforms (CDPs)

Customer Data Platforms offer organisations the chance to consolidate their first-party data sourced from various touchpoints, both online and offline, into one cohesive user profile. Updating marketing strategies with this comprehensive user data allows for more individualised campaigns and efficient resource use without the need for third-party cookies.

Key Features of CDPs:

  • Data Unification: Aggregates user data from diverse sources into a single profile.
  • Segmentation: Allows for the grouping of customers based on behaviour and preferences.
  • Targeting: Assists in personalised marketing outreach to defined segments.
  • Real-Time Insights: Collects and manages data in real-time for timely actions.

Benefits of Using CDPs:

  • Increases the accuracy of targeted marketing.
  • Improves customer experiences through personalisation.
  • Reduces reliance on external data sources.

Challenges to Consider:

  • Data Privacy: Rigorous management of data to ensure compliance with privacy regulations.
  • Integration: Seamless integration with current systems can be complex.

Implementation Checklist:

  1. Assess Data Sources: Determine all the potential data collection points.
  2. Choose a Platform: Select a CDP that aligns with your marketing goals.
  3. Plan Integration: Map out the process for integrating the CDP with existing systems.
  4. Ensure Compliance: Verify that the CDP adheres to all relevant data protection regulations.

Understanding and using CDPs can equip your marketing teams with the tools to create more effective campaigns by focusing on the data you already own and control.

They provide a valuable alternative to the fading use of third-party cookies, steering towards a privacy-first future while maintaining customer engagement and campaign effectiveness.

Contextual Advertising

In response to the shift away from third-party cookies, advertisers are turning to methods like contextual advertising, which aligns adverts with the content of the website being viewed, offering relevance without personal user data.

Content Analysis

When you visit a web page, contextual advertising systems perform automated analysis to understand the content’s theme and subject matter. They then display adverts that are directly related to the content you’re engaging with. For instance, if you’re reading a car review, you might see adverts for car insurance or similar automobiles.

  • Keyword Matching: Central to content analysis, relevant keywords within the text are identified to align adverts based on those topics.
  • Theme Recognition: More advanced systems also comprehend the overall theme of the page, enabling the placement of adverts that match the broader context rather than specific words.

Predictive Audience Segmentation

Predictive audience segmentation doesn’t rely on personal data but leverages contextual clues to infer audience interests and intentions.

  • Behavioural Insights: By looking at the browsing context, it’s possible to predict the type of audience and their possible preferences without intrusive tracking.
  • Content Preferences: Ad placement strategies consider the type of content consumed to project potential interests, delivering appropriate adverts. For example, frequent visitors to tech review sites are likely to see tech-related advertising.

Consent-Based Advertising

With the shift away from third-party cookies, consent-based advertising is gaining momentum as a reliable approach for businesses seeking to personalise ads while respecting user privacy. This strategy hinges on obtaining explicit consent from users before collecting any data, ensuring that advertising efforts are transparent and privacy-compliant.

Consent Management Platforms

Consent Management Platforms (CMPs) play a pivotal role in this ecosystem. They enable you to manage and document user consent for the use of their personal data. Here’s how these platforms function:

  • User Experience: The CMP interfaces with you when you visit a website, presenting options to either agree to or opt out of data collection.
  • Transparency: Detailed information is provided about the types of data collected and the purposes it’s used for, allowing you to make informed choices.
  • Data Collection Control: Once you provide consent, the CMP ensures that only agreed upon data is collected, aligning with legal regulations like GDPR.
  • Consent Documentation: The platform securely stores your consent decisions, creating an auditable trail that businesses can reference if needed.

CMPs offer a streamlined and user-friendly way to adhere to privacy standards, ensuring that you have ultimate control over your personal information.

What Are the Alternatives to 3rd Party Cookies in 2024

Authenticated Traffic Solutions

Authenticated traffic solutions offer a viable alternative to the use of third-party cookies for user identification and personalised advertising.

Email-Based Targeting

Email-based targeting involves the use of hashed user emails as identifiers. When you log into websites and consent to marketing communications, your anonymised email can be used to recognise your activity across various platforms. This approach relies on:

  • User Consent: Gaining your explicit permission to use your email for targeted advertising.
  • Privacy Compliance: Adhering strictly to data protection laws such as GDPR.
  • Data Security: Ensuring your email data is hashed to prevent misuse.

Businesses may collaborate with platforms that specialise in this form of targeting, thereby maintaining relevant advertising without relying on invasive tracking methods.

Blockchain and Distributed Ledger Technology

In addressing the loss of third-party cookies, blockchain technology offers a verifiable and secure method for handling digital identities and transactions without relying on centralised data collection methods.

Decentralised Identity Verification

With the implementation of blockchain, you can securely verify your identity online through decentralised systems.

These systems allow for the control of personal data to remain with you, rather than with corporations. Identity tokens are created on the blockchain, providing a way for you to prove who you are without revealing sensitive information.

  • Privacy: Blockchain upholds your privacy, as identity verification does not require all personal details to be disclosed.
  • Security: The inherent cryptographic nature of blockchains protects your identity from fraud and hacking.
  • Control: You have full control over your digital identity and decide how much information to share and with whom.

Using distributed ledger technology, identity verification becomes a trustless process. Instead of third parties, cryptographic proofs validate the authenticity of the information against the public ledger. This removes the need for intermediaries and empowers users with self-sovereign identities.


As the industry adapts to the departure of third-party cookies, your focus can shift to a variety of alternative strategies. These include:

  • First-Party Data Collection: Increasing reliance on your website’s data preserves user trust and complies with privacy regulations.
  • Contextual Advertising: Aligning ads with content on the page, ensuring they’re relevant without relying on user data.
  • Privacy-Preserving APIs: Such as Google’s Privacy Sandbox, aiming to provide personalisation with user anonymity.
  • Server-Side Tracking: Server-side tracking is a method where data is collected directly through web servers rather than relying on the client’s browser

You now have the opportunity to employ these transparent tactics which balance advertising efficacy with consumer privacy.

As a business, you need to be adaptable and responsive to these changes, ensuring that your marketing efforts remain effective and compliant with legal frameworks.

Despite these challenges, rest assured that a variety of viable solutions are available for effective targeting and analytics.

Your adaptability and willingness to adopt new methodologies will be pivotal as the industry continues its transition towards a more privacy-conscious future.

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