Analytics
April 29, 2025

How Consent Management Platforms Work for Your Website

Please note that this blog post is general in nature and does not constitute legal advice.

Following the European Union’s 2018 rollout of the General Data Protection Legislation (GDPR), we’ve seen countries such as Brazil and the United States implement similar data privacy laws. These laws share many of the GDPR’s core principles, such as giving users control over their personal data and requiring companies to be transparent about how they collect and use it.

As time marches on, more countries are poised to create and adopt similar legislation; for example, India’s Personal Data Protection Bill (PDPB) and Australia’s proposed revamp of the Privacy Act. This trend of data privacy regulations is likely to continue as lawmakers grapple with the increasing importance of data protection in a modern world mediated by the internet.

Organizations which operate websites and mobile applications that serve these geographic markets will need to continue adapting to this new privacy-centric digital landscape.

Consent management platforms (CMPs) are a critical tool that help you manage cookies and ensure compliance with these regulations.

Firstly, what are cookies?

Chocolate chip cookie.
No, not that type of cookie.

Cookies are a technical snippet of data through which your web browser can record a history of your behavior across multiple websites. They are widely used to make websites work more efficiently and provide usage information to the website owner. However, since cookies can be shared by more than one website or service, there is a risk to privacy.

What are cookie categories?

Cookies generally fall into one of the following five categories:

What are the consent requirements?

Specific cookie guidelines vary in nature depending on the regulation, but at a high level, the overarching principles of the GDPR (upon which most other legislation is based) are that:

Under the GDPR, users need to opt-in to cookies, meaning tracking should not occur without the user first granting consent. In contrast, under California’s CCPA, users can opt-out of cookies. This means tracking can occur without first granting consent. Additionally, GDPR-compliant cookie banners must include a Reject All button alongside the Accept All button—having only an Accept option does not meet regulatory requirements.

Screenshot of a cookie consent pop-up from Google.
Example cookie consent pop-up from Google.

How long does consent last?

Again, this varies by legislation. As an example, The French data protection authority, CNIL, has advised that the period should be 6 months.

What is a Consent Management Platform (CMP)?

A Consent Management Platform (CMP) is a tool that enables websites to collect, manage, and store user consent in compliance with global data privacy laws. CMPs provide users with options to accept, refuse, or modify their consent preferences regarding cookies and tracking technologies. They help businesses ensure compliance with regulations like GDPR, CCPA, and other evolving privacy laws.

Why Are CMPs Important?

CMPs play a crucial role in modern data privacy compliance by:

Logos of various consent management platforms: TrustArc, CookieYes, Osano, Usercentrics, Cookiebot by Usercentrics, Onetrust.
At KARL Mission, we can work with any consent management platform (CMP) tool of your choice, or we can recommend a solution that best fits your needs.

How CMPs Ensure User Privacy Compliance

CMPs help organizations meet regulatory requirements by implementing several key features:

  1. Consent Banners & Pop-Ups: CMPs provide customizable banners that inform users about cookies and request their consent before any tracking occurs.
  2. Granular Consent Preferences: Users can select which types of cookies they wish to allow, from strictly necessary cookies to advertising and analytics cookies.
  3. Consent Logging & Storage: CMPs keep records of user consent decisions, which can be accessed to demonstrate compliance during audits.
  4. Geo-Specific Compliance Adjustments: CMPs recognize a user’s location and apply the appropriate privacy regulations based on their region.
  5. Consent Withdrawal Options: Users must be able to change their consent preferences at any time, and CMPs make it easy to do so.

Conclusion

As global data privacy regulations continue to evolve, businesses must stay ahead of compliance requirements to build trust with their users. Implementing a robust consent management strategy is essential in ensuring adherence to data protection laws while maintaining a seamless user experience. By understanding how cookies function and the varying consent requirements, organizations can navigate the complexities of digital privacy with confidence.

A Consent Management Platform (CMP) is one of the most effective ways to handle user consent while ensuring compliance with regulations. By automating the consent process, providing transparency, and allowing users to control their data, CMPs help businesses avoid legal pitfalls and foster better relationships with their audience.

Need Help Navigating Cookie Compliance?

At KARL Mission, we specialize in helping businesses adapt to data privacy regulations while optimizing user experience. Book a free consultation today to ensure your website is compliant and your data strategy is future-proof.

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Alex Courselle, CRO Director at KARL Mission.
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