Privacy and Consent Management

Enterprises increasingly rely on cookies, tags, and other browser-resident tracking technologies to build customer profiles and deliver personalized services, but these practices raise significant privacy concerns—especially as third-party trackers extend the data value chain beyond organizational boundaries. Since the mid-1990s, “implicit consent” has been common, yet a global wave of privacy regulation (including GDPR and many national laws) is pushing organizations toward explicit consent, stronger transparency, and demonstrable compliance. This has accelerated demand for Privacy and Consent Management solutions, commonly delivered as Consent Management Platforms (CMPs), which let end-users grant, refuse, or revoke consent and let organizations operationalize those choices across systems and partners.

The market is shaped by tension between MarTech’s revenue impact and legal obligations, particularly acute for publishers whose advertising models depend on complex, multi-layered tag ecosystems (including piggyback tags that may fire without site-owner knowledge). Effective consent management requires not only collecting user choices but also enforcing and communicating them downstream—typically by scanning and blocking trackers until consent is captured, and/or by using the IAB Europe Transparency and Consent Framework (TCF) to standardize consent signals via a vendor list, TC string, APIs, and governance.

Vendor approaches vary by marketing-vs-compliance orientation and publisher-focused vs general enterprise scope. Baseline capabilities include cookie/privacy notice generation, consent capture and enforcement, auditing, end-user self-service updates, and DSAR workflows; advanced capabilities include data mapping/inventory, compliance progress visualization, access management, and data risk management. Leadership ratings identify strong all-around vendors (notably OneTrust, TrustArc, Akamai, Syrenis, iWelcome, and Quantcast), while correlated matrices highlight tradeoffs between product depth, innovation, and market reach.

• The implicit-consent approach to cookies and trackers has been common since the mid-1990s.
• The IAB Europe Transparency and Consent Framework includes a Global Vendor List, a TC String, an API for CMPs, and governing policies.
• In an IAB-compliant CMP, consent and preferences are packaged in a standardized payload called the TC String.
• An IAB-compliant cookie notice can categorize cookies using personalization, linking devices, experience enhancement, and precise geographic location data, and can disclose individual vendors.
• Piggyback tags can enable third parties to set cookies on a website without the site owner’s permission or knowledge.
• Two primary consent-enforcement approaches are blocking trackers until consent is collected and using TCF standardized signals to whitelisted vendors.
• OneTrust was established in 2015.
• TrustArc was founded in 1997.
• Crownpeak’s vendor database contains over 6,000 vendors.
• iubenda’s Privacy and Cookie Policy Generator includes 1,300 clauses drafted by an in-house legal team.

• “Solutions should attempt to integrate privacy-by-design principles, and make innovative efforts to align the – at times – conflicting needs of marketing and legal departments.”
• “Data usage is a key aspect of protecting the privacy and enforcing the consent choices of end-users.”
• “Effectively communicating an end-user’s consent choices to relevant departments within an organization as well as to downstream partners in the digital advertising chain is critical to a Privacy and Consent Management solution.”
• “At this point, there are no universally recognized interoperability standards for Privacy and Consent Management.”
• “The uncertainty that impending regulation brings for companies creates the conditions for this market segment to develop rapidly.”
• “We consider the best approach to be a mixture of the two, where vendors strive to create a symbiotic relationship between legal privacy obligations and generating actionable marketing insights.”
• “Progressive profiling allows the customer to build a continuously more detailed understanding of each end user, but with detailed versioning and audit trails for end-user consent.”
• “A key differentiator is Crownpeak’s approach to identifying cookies and trackers on a website; Crownpeak identifies the vendors who are dropping cookies and tags rather than identifying the cookies and tags themselves.”
• “The central Consent Ledger provides a Single Source of Truth for consented user data.”
• “OneTrust and its possibilities for intelligent automation is a good match for customers that have complex or legacy data systems that pose challenges for privacy compliance.”