In this article, we aim to clarify what third-party cookies are, why they pose a threat to the digital marketing ecosystem, and how Google is advancing towards phasing out third-party data while promoting first-party data initiatives in digital marketing.
As part of the Privacy Sandbox project, Chrome is phasing out support for third-party cookies and proposing new functionality for cookies along with purpose-built APIs to continue supporting legitimate use cases while preserving user privacy. The phase out will be gradual and starts from Q1 2024 with disabling third-party cookies for 1% of users to facilitate testing.
🍪 What are Third-Party Cookies
Third-party cookies are tracking codes placed on a website visitor’s computer by a domain other than the one they are visiting. These cookies are commonly used by advertisers and analytics companies to track user browsing habits across multiple websites.
💢 Why Third-Party Cookies Pose a Threat to Users
Third-Party tracking enables the creation of detailed profiles of users’ interests, behaviours, and preferences, which are used for targeted advertising and content personalisation. However, the widespread use of third-party cookies raises significant privacy concerns as they can lead to the accumulation of extensive personal data without explicit user consent or awareness.
From a user’s perspective, third-party cookies can be seen as a privacy threat. They enable various entities to track users’ online activities across different websites, often without their explicit knowledge or consent. This tracking can result in a feeling of being constantly surveilled, as personal browsing data and behaviours are captured and analysed for commercial purposes. Moreover, there’s a risk of sensitive information being mishandled or falling into the wrong hands, leading to potential privacy breaches.
👋 Why Google is Phasing out third-party cookies promoting first-party data collection initiatives
Google’s decision to phase out third-party cookies by 2024 aligns with a broader industry movement towards more privacy-conscious web practices. This phase-out is part of Google’s Privacy Sandbox initiative, which aims to develop new technologies that protect user privacy while still allowing advertisers and websites to provide personalised content and experiences. The shift is expected to drive the digital marketing industry towards more transparent and consent-based practices, relying more on first-party data and less on the cross-site tracking that third-party cookies enable. This change reflects a growing public demand for privacy and a legal landscape increasingly focused on user data protection.
🔏 What is the Google Privacy Sandbox
The Privacy Sandbox is an industry-wide effort to develop new technology that will improve people’s privacy across the Web and apps on Android. The proposed solutions will limit tracking of individuals and provide safer alternatives to existing technology on these platforms while keeping them open and accessible to everyone.
🛡️ What are the goals of the Google Privacy Sandbox
The goals of the Privacy Sandbox initiative are focused on balancing privacy with the needs of digital businesses.
- Build New Technology for Privacy: the initiative aims to create technologies that ensure users can enjoy their online experience without worrying about their personal information being collected. This includes making current tracking mechanisms obsolete and blocking covert tracking techniques like fingerprinting.
- Enable Free Online Content: it strives to provide free access to online information without relying on intrusive tracking. This involves offering privacy-preserving alternatives to publishers and developers for their key business needs, including content and ad serving.
- Collaborate on New Privacy Standards: the project invites industry members, including publishers, developers, and advertisers, to contribute to the development of improved privacy standards for the web and Android, recognising the internet as a vital source of information and a driver of economic growth.
📅 The Google Privacy Sandbox Web timeline
The most important information is that, starting in the latter half of Q3 (August 2024), Chrome will begin the gradual phase-out of third-party cookies.
From October 2023, Chrome has been providing developers with an experimental label for independent testing and simulation of the deprecation of third-party cookies, known as the opt-in testing with labels phase. Third-party cookies will start to be phased out incrementally after being deprecated for 1% of users from Q1 (January 2024).
🥇 Understanding First-Party Data
As those deadlines are approaching, adaptation with first-party data strategies is key for businesses.
First-party data is gathered from various sources like web interactions, CRM systems, and in-store purchases. It encompasses a range of information including demographics, purchase history, email responses, and browsing behaviour. The key distinction of first-party data is its direct collection from the source, ensuring its relevance and reliability.
1️⃣ Why First-Party Data is Crucial
- Trust and Privacy: this data is collected with consent, aligning with privacy regulations and fostering customer trust.
- Relevance and Personalisation: it enables precise targeting and personalisation in marketing, enhancing the effectiveness of strategies by understanding customer preferences.
- Cost-Effectiveness: it’s often more economical than buying third-party data, offering better ROI due to its accuracy.
- Future-Proofing: first-party data is a sustainable choice for digital marketing.
🎯 The Value of First-Party Data
The utilisation of first-party data in creating personalised consumer experiences can significantly boost business outcomes, including increased revenue and cost efficiency. Brands leveraging this data effectively have witnessed notable growth in revenue and reductions in costs.
⚔️ Challenges in Utilising First-Party Data
Despite its benefits, companies often encounter hurdles like technological limitations, skill gaps, and data silos, which hinder the effective use of first-party data.
📱 Strategies for Effective Use of First-Party Data
- Invest in Technology: implement technologies for efficient collection, storage, and analysis of first-party data.
- Build Skills and Knowledge: focus on training and hiring talent proficient in data analysis and digital marketing.
- Data Integration: ensure that first-party data is integrated across all platforms for a comprehensive customer view.
- Transparency and Trust: be transparent about data collection and usage to build customer trust.
- Personalisation: utilise first-party data for personalizing customer experiences across different channels.
✅ The steps for phasing out third-party cookies
- Auditing Third-Party Cookie Usage: understanding and improving first-party cookies, and gaining a comprehensive understanding of third-party cookies used on a site.
- Testing for Breakage: identifying potential issues that may arise due to the phasing out of third-party cookies.
- Using Partitioned Cookies with CHIPS: implementing CHIPS (Cookies Having Independent Partitioned State) for better privacy controls.
- Utilising Related Website Sets: this involves grouping sites that have a common owner or are closely related.
- Migrating to Relevant Web APIs: shifting from third-party cookies to modern web APIs that offer similar functionalities.

Let’s speak it out loud: For businesses prioritising a first-party data adaptation strategy is becoming essential. It not only facilitates personalised marketing and builds customer trust but also ensures adherence to privacy laws. Embracing first-party data strategies is crucial for maintaining competitiveness and relevance in the dynamic digital market.


