Didomi CMP: TCF 2.3 and 2.4, GPP, Google certification, the Sourcepoint deal and pricing

Didomi sells consent to large, multi-country companies. One console holds notices for many domains, apps and TV apps, and each notice changes by country or US state. The company says it supports over 1,500 clients in 35 countries (company claim, Didomi, 8 July 2025).

The 2025 deals turned Didomi into a consolidator. Marlin Equity Partners completed a majority investment in the first half of that year. Didomi then bought Addingwell, a server-side tagging firm, in April and Sourcepoint on 8 July 2025 (Didomi, 8 July 2025). AdExchanger reported almost no overlap between the two client lists, with Didomi strong in Europe and Canada and Sourcepoint in the US, UK and Germany (AdExchanger, 8 July 2025).

Didomi also lobbies. It co-founded the European CMP Association, set up in Brussels on 20 March 2026 with Usercentrics, iubenda and Axeptio (Didomi, 22 May 2026). The group argues against parts of the Commission's Digital Omnibus proposal, which our EU Digital Omnibus tracker follows.

A team builds a notice in the console, picks the regulations and regions, and adds vendors. Didomi then serves the right banner to each visitor and records the choice with the exact text shown. A cross-device feature can share one consent across web, app and TV for a logged-in user (Didomi CMP page).

For TCF 2.4, Didomi chose a fixed switch date. Web notices could move from 6 October 2026, and all moved automatically on 21 October, two days before the IAB deadline. Didomi will not use the optional 2.4 change that drops special-purpose-only vendors from the legitimate interest section (Didomi, TCF 2.4 migration). Vendors that read that section will still find those bits set.

For US traffic, a state without its own GPP section falls back to the US National section (Didomi, US state sections). You can paste the result into our GPP consent string decoder to see which section a page wrote.

Didomi publishes no prices; its old pricing URL returned "not found" on 9 November 2026. Google's partner directory describes the price as custom and "based on Monthly Unique visitors" (Google CMP Partner Program). Expect a quote and an annual contract. For Sourcepoint customers, Didomi says a move to its platform needs a signed migration addendum first (Didomi, Sourcepoint migration).

Strengths

• Clear TCF 2.4 timetable. Didomi published dates for each surface and met the web deadline with a forced switch (Didomi docs).
• Full US state coverage. Its GPP docs have pages for all 20 state sections in the standard, plus a national fallback (IAB Tech Lab, GPP sections).
• Google status on all surfaces. Google certifies Didomi for web, app and CTV, and rates it Gold in its Consent Mode partner programme (Google; Google CMP Partner Program).

Limits

• No public price. Small sites will find simpler options with list prices.
• A product merger in progress. AdExchanger reported a two-year plan to build one platform from Didomi and Sourcepoint, so roadmaps may shift (AdExchanger).
• Marketing pages lag the docs. The CMP page still cites TCF v2.2, while the docs describe 2.3 and 2.4 (Didomi CMP page).
• No Canadian TCF. Didomi says it does not support the IAB Canada section of GPP.

• Didomi's founding year and the date of the Marlin investment. The pages we read give neither.
• The Marlin deal size: AdExchanger reported $83 million, while a deal database cited a $72 million raise.
• Where Didomi hosts consent records, and whether customers can choose a region.
• Whether mobile and CTV notices had moved to TCF 2.4 by 9 November 2026, and any plan for GPP US National v3.

1. IAB Europe, CMP list (JSON, lastUpdated 5 November 2026). https://cmplist.consensu.org/v2/cmp-list.json
2. Google Ad Manager Help, "Google consent management requirements for serving ads in the EEA, the UK, and Switzerland" (certified CMP list, accessed 9 November 2026). https://support.google.com/admanager/answer/13554116
3. Google, "CMP Partner Program" (accessed 9 November 2026). https://cmppartnerprogram.withgoogle.com/
4. Didomi, "IAB TCF 2.4 migration" (accessed 9 November 2026). https://docs.didomi.io/releases-and-announcements/migrations/iab-tcf-2.4-migration.md
5. Didomi, "IAB TCF 2.3" (accessed 9 November 2026). https://docs.didomi.io/consent-management-platform-cmp/frameworks-regulations/iab-tcf/iab-tcf-2.3.md
6. Didomi, "IAB Global Privacy Protocol (GPP)" (accessed 9 November 2026). https://docs.didomi.io/consent-management-platform-cmp/frameworks-regulations/iab-global-privacy-protocol-gpp
7. Didomi, "U.S. State Privacy Sections" (accessed 9 November 2026). https://docs.didomi.io/regulations-manager/frameworks/global-privacy-protocol-gpp/gpp-string/u.s.-state-privacy-sections.md
8. Didomi, "U.S. National Privacy Section" (accessed 9 November 2026). https://docs.didomi.io/regulations-manager/frameworks/global-privacy-protocol-gpp/gpp-string/u.s.-national-privacy-section.md
9. Didomi, documentation index (accessed 9 November 2026). https://docs.didomi.io/llms.txt
10. Didomi, "Sourcepoint" migration guide (accessed 9 November 2026). https://docs.didomi.io/releases-and-announcements/migrations/sourcepoint.md