TIGERA

Tigera was founded in 2016 in San Francisco by networking engineers who had come out of Metaswitch Networks and VMware. Christopher Liljenstolpe, Carly Stoughton, and co-founders saw that Kubernetes adoption was accelerating rapidly but the networking layer was immature.

The original Kubernetes networking model was intentionally flexible — it described what to achieve but not how. That gap created an opening for a networking solution that worked natively with Kubernetes security policies.

They built around Project Calico, a networking solution that had started as an open-source project at Metaswitch. Tigera commercialized it as Calico Enterprise, targeting enterprises needing production-scale Kubernetes networking with security policy, observability, and compliance.

Tigera gives away Project Calico as open source — free to download, free to use, actively maintained by the company. Millions of Kubernetes clusters run on Calico.

The commercial products are Calico Enterprise and Calico Cloud: subscription-based offerings that add observability, advanced security policy management, compliance reporting, and enterprise support on top of the open-source foundation. The funnel is clean: enterprises start with open-source Calico, hit production-scale challenges that the free version doesn't fully address, then upgrade to the paid offering.

It is the classic open-source commercialization model, and it works because the open-source version is genuinely useful and widely embedded.

Project Calico — the open-source container networking and security solution. One of the most widely deployed networking solutions in Kubernetes environments globally.

Calico Enterprise — the commercial platform adding network policy management, advanced observability, compliance reporting, and enterprise support. Calico Cloud — the SaaS version of the enterprise platform for organizations that prefer managed infrastructure.

Both commercial products integrate directly with Kubernetes, cloud providers, and existing security tooling.

Tigera grew primarily through Project Calico becoming the dominant open-source Kubernetes networking solution. When major managed Kubernetes platforms — including Google Kubernetes Engine — adopted Calico as a default networking option, Tigera's reach expanded without any direct sales effort.

That distribution flywheel — having the leading cloud platforms embed your open-source tool as a default — is almost impossible to manufacture. You either build something good enough to be chosen, or you don't.

Tigera did. From that installed base, the enterprise sales motion became relatively straightforward: identify the organizations running thousands of Kubernetes nodes and offer them the enterprise-grade version of the tool they're already using.

Competing against well-capitalized platform players is Tigera's structural challenge. Cisco acquired Isovalent — the maker of Cilium, Calico's main open-source competitor — in 2023.

Cilium has been gaining share, backed now by Cisco's distribution and enterprise sales muscle. Tigera has to compete on technical merit, community trust, and the depth of its enterprise feature set against a competitor that now has a major networking vendor behind it.

For a company that has raised $56 million total, that is a genuinely difficult competitive position. Their moat is the depth of Calico's deployment base and the loyalty of the Kubernetes community.

Defending that moat against a Cisco-backed alternative is the defining challenge ahead.

Tigera has been backed by NEA and Insight Partners, two of the more respected enterprise technology investors. NEA led the early rounds.

Insight Partners led the Series B in 2021. The total raised of approximately $56 million is modest relative to competitors, which reflects both the company's capital efficiency and the inherent difficulty of raising for an open-source infrastructure company competing against increasingly well-resourced platform players.