Last updated Feb 18, 2026 by AI Enrichment
InfoSum, a data collaboration platform specializing in privacy-first advertising technology, successfully raised $15 million in Series B funding in March 2023. The company's core technology enables brands, publishers, and data owners to connect and analyze first-party data without actually sharing or moving the underlying raw data between parties. This approach addresses growing privacy concerns and regulatory requirements while maintaining data utility for advertising and marketing purposes. The funding round was designed to accelerate InfoSum's expansion of its data connectivity infrastructure, which has become increasingly critical as the advertising industry moves away from third-party cookies and toward privacy-centric solutions. The investment comes at a pivotal time for the AdTech industry, as companies scramble to develop alternatives to traditional tracking methods ahead of cookie deprecation and stricter privacy regulations like GDPR and CCPA. InfoSum's data clean room technology represents one of the leading approaches to solving the identity and targeting challenges facing advertisers. The $15M will be deployed to scale the platform's capabilities, expand market reach, and enhance the technical infrastructure that allows multiple parties to derive insights from combined datasets while maintaining data sovereignty and compliance with privacy regulations.
This funding event signals continued investor confidence in privacy-preserving data collaboration technologies as a fundamental infrastructure layer for the post-cookie advertising ecosystem. InfoSum's approach of decentralized data collaboration, where data never leaves its original environment, positions it as a key enabler for the industry's transition to first-party data strategies. The investment reflects broader market dynamics where data clean rooms and secure collaboration platforms are becoming essential tools for advertisers, publishers, and platforms seeking to maintain targeting and measurement capabilities while respecting user privacy. This funding also intensifies competition in the data collaboration space, where InfoSum competes with solutions from major platforms like Google, Amazon, and Snowflake, as well as other independent providers. The capital injection enables InfoSum to strengthen its position as an independent, neutral infrastructure provider—a key differentiator from walled garden solutions. The event underscores the growing recognition that interoperable, privacy-first data infrastructure will be critical for the future of digital advertising, particularly as regulatory pressure increases globally and consumer expectations around data privacy continue to evolve.