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Circonus is an enterprise software company headquartered in Fulton, Maryland, that develops a monitoring and analytics platform to provide real-time visibility into corporate infrastructure and cloud technologies. The subscription software platform unifies telemetry data at scale to support IT operations, enabling organizations to manage the health and performance of complex distributed systems. Operating under the leadership of former chief executive officer Bob Moul, the venture capital backed company raised a $6.8 million Series A1 funding round in 2019 to expand its commercial footprint and engineering teams. Throughout its lifecycle as an independent entity, Circonus secured financial backing from institutional investors including Osage Partners, Bull City Venture Partners, and NewSpring Capital before ultimately being acquired by the data management firm Apica. The organization was originally founded in 2010 by distributed systems expert and former chief technology officer Theo Schlossnagle.
Circonus has raised $16.8M across 2 funding rounds.
Circonus has raised $16.8M in total across 2 funding rounds.
Circonus has raised $16.8M across 2 funding rounds. Most recently, it raised $10.0M Series B in November 2021.
| Date | Round | Lead Investors | Other Investors | Status |
|---|---|---|---|---|
| Nov 1, 2021 | $10M Series B | Baird Capital | Bull City Venture Partners, Newspring Capital, Osage Venture Partners | Announced |
| Jan 21, 2020 | $6.8M Series A | Osage Venture Partners | BEN Franklin Technology Partners, Bull City Venture Partners, Newspring Capital | Announced |
Circonus is a technology company that builds a full-stack monitoring and analytics platform designed for modern enterprises, providing real-time visibility into the behavior, health, trends, and performance of traditional infrastructure and cloud-based technologies.[1][2][3] Its core products include the open-source Circonus Unified Agent (CUA) for metric ingestion with 300+ integrations, the patented clustered Time Series Database (TSDB) IRONdb capable of handling trillions of measurements per second, and stream processing systems for unlimited alerting via integrations like PagerDuty, Slack, and webhooks.[2] Circonus serves enterprises needing high-availability, scalable telemetry solutions, solving problems of data interoperability, real-time fault detection, and decision-making from massive-scale metrics in distributed systems.[1][2]
The platform addresses observability challenges by unifying metric collection, storage, and analysis, enabling faster deployments, self-healing workflows, and smarter operations for clients like Major League Baseball, Sparkpost, and SmugMug.[1][2]
Circonus developed its foundational histogram technology in 2011, securing patents and pending patents for this mergeable, highly-efficient approach to handling high-frequency telemetry data.[1] By 2021, the company open-sourced this technology via openhistogram.io, establishing an industry standard to resolve vendor-proprietary format incompatibilities and boost telemetry exchange across platforms.[1] Led by experts in large-scale distributed systems and data science, Circonus evolved from innovating core storage tech like IRONdb—a patented, infinitely scalable TSDB—to a comprehensive platform with CUA for edge collection and broker-based distribution over secure TLS.[1][2]
Early production use at scale by major clients marked pivotal traction, humanizing its shift from proprietary innovation to community-driven standards, as praised by OpenTelemetry co-creator Ben Sigelman.[1]
Circonus rides the observability and telemetry explosion trend in cloud-native and distributed systems, where high-cardinality metrics demand scalable TSDBs amid microservices and edge computing growth.[1][2] Its timing aligns with CNCF projects like OpenTelemetry, as its histograms enable seamless data sharing—countering vendor lock-in and fueling open standards.[1] Market forces like rising DevOps needs, auto-scaling, and self-healing workflows favor its strengths, influencing the ecosystem by contributing battle-tested tech used in production for years.[1][2]
As a Philly-based B2B player gathering sensor intelligence, it empowers enterprises in data science-driven operations, bridging traditional IT with modern analytics.[1][7]
Circonus is poised to expand its open histogram standard adoption, integrating deeper with emerging observability stacks like eBPF and AI-driven anomaly detection. Trends in infinite-scale telemetry and multi-cloud will amplify IRONdb's edge, potentially growing via partnerships in the CNCF ecosystem. Its influence may evolve toward dominant open-source contributor status, solidifying real-time enterprise visibility as table stakes—circling back to its 2011 innovation now empowering the industry's telemetry future.[1][2]
Circonus has raised $16.8M in total across 2 funding rounds.
Circonus's investors include Baird Capital, Bull City Venture Partners, NewSpring Capital, Osage Venture Partners, Ben Franklin Technology Partners.
