The DOORS Matchmaking Platform is an interactive digital solution developed to support stakeholder collaboration and foster innovation within the Black Sea Blue Economy. It enables researchers, businesses, and investors to connect, communicate, and form partnerships aligned with sustainable blue growth. The platform features profile creation, targeted partner search, discussion forums, and direct messaging. This user-centric tool supports long-term networking, project development, and regional integration in the marine and maritime sectors. It includes advanced search and filtering functionalities that allow users to find potential partners based on specific needs and interests. Once a match is identified, users can initiate contact through a secure internal messaging system that respects privacy while encouraging direct dialogue. It offers a dedicated space for ongoing discussions, where users can exchange insights, explore opportunities, and contribute to a collaborative community. The platform supports meaningful networking, cross-sector collaboration, and regional integration in marine and maritime innovation, as it has been designed with usability and long-term impact in mind.