DK is a platform for measuring and steering the carbon footprint of advertising and media campaigns. It targets advertisers, publishers, agencies and media sellers and covers digital media, television, radio, outdoor and press. The platform calculates emissions per campaign, includes several hundred reduction recommendations, exports audit reports for non-financial reporting, and offers a calculation API and data-collection connectors so the carbon indicator can appear in dashboards. According to the vendor, the method follows ADEME's Bilan Carbone method and therefore the GHG Protocol.
DK is a product of Diploide, a French company in Rennes; no parent company is stated. The vendor's site does not say where the platform is hosted; only the website runs at alwaysdata, and the privacy policy says contact data is not stored outside the European Union. France is therefore used as the working assumption here. Ask about the hosting location and the data processing agreement. It is commercial software, not open source.