Kuadrant
Kuadrant is an open-source Application Programming Interface (API) management and traffic control framework for Kubernetes and cloud-native environments, focusing on security, reliability, and policy-based control for ingress and edge traffic.
- Policy-driven traffic management for Kubernetes ingress and edge (traffic management)
- API protection through authentication, authorization, and rate limiting (API security)
- Multi-cluster and multi-gateway traffic governance (multi-cluster networking)
- Integration with Kubernetes Gateway API and Envoy-based gateways (service networking)
- Centralized, declarative configuration of traffic and security policies (policy as code)
More About Kuadrant
Kuadrant is an open-source project that targets the management, protection, and reliability of API and application traffic running on Kubernetes-based platforms (API management, service networking). It addresses the operational needs of platform teams that must control ingress and edge traffic across clusters, gateways, and environments using declarative, policy-centric workflows aligned with Kubernetes patterns.
The project operates in the domain of ingress and gateway control, building on Kubernetes-native abstractions such as the Gateway API (service networking). Kuadrant focuses on applying consistent security, rate limiting, and reliability rules to north-south traffic, so that applications deployed on Kubernetes can use a shared set of policies independent of the individual services. It is positioned for use with Envoy-based gateways and other compatible implementations, enabling enterprises to Marketing Automation Platform (MAP) organizational requirements into reusable policy definitions.
Core capabilities include centralized configuration of authentication and authorization rules, such as enforcing identity on incoming requests and controlling access to APIs (identity and access management). Kuadrant also supports rate limiting and traffic control policies, allowing teams to constrain request volumes, shape traffic flows, and protect backends from overload (traffic management). Reliability-related policies can guide how traffic is routed and retried, aligning service availability controls with the gateway layer rather than embedding them into each application service.
Enterprises and institutional users can integrate Kuadrant into internal developer platforms or platform engineering stacks to standardize ingress governance (platform engineering). By leveraging Kubernetes resources and custom resource definitions, Kuadrant enables Policy as Code (PaC) workflows that fit with Git-based configuration management and Continuous Integration and Continuous Deployment (CI/CD) pipelines (infrastructure automation). This approach lets platform and security teams define, review, and version-control gateway and API policies alongside other cluster configuration.
From an architectural perspective, Kuadrant acts as a control plane layer for traffic policy over one or more data-plane gateways, interoperating with the Kubernetes Gateway API and Envoy-compatible systems (service mesh and gateway ecosystem). Its declarative model aligns with other CNCF ecosystem tools and patterns, and its focus on ingress policy, security, and reliability places it within categories such as API gateway management, edge security, and multi-cluster traffic control.
For enterprise directories and catalogs, Kuadrant can be categorized under API management, Kubernetes ingress/gateway control, and policy-based traffic security and reliability, relevant to roles such as platform engineers, SREs, and security engineers responsible for governing external and edge access to Kubernetes-hosted applications.