ClickHouse, a prominent player in real-time analytics and data warehousing, has announced an extension of its Series C financing, bringing new investors such as Citi Ventures and Insight Partners onboard, along with continued support from existing backers. The company has experienced rapid growth, surpassing 2,000 customers and significantly increasing its annual recurring revenue, with notable new clients including Hewlett Packard Enterprise and Meta. ClickHouse's popularity is especially strong among AI companies, and it was named to the 2025 Forbes Cloud 100 list, highlighting its innovation and growth in the private cloud sector. The company recently hosted its first user conference, OpenHouse, and continues to expand its leadership team and platform capabilities, with new products like ClickStack and ClickHouse Private, which cater to various data processing needs and regulated environments. CEO Aaron Katz emphasized the importance of the extended financing in accelerating ClickHouse's mission to provide fast analytics solutions, supported by endorsements from investors and customers who recognize its transformative impact on data-driven AI initiatives.