Knative
Knative is open-source Kubernetes middleware for building, deploying, and managing serverless workloads.
What Knative is
Knative is open-source Kubernetes middleware for building, deploying, and managing serverless workloads. Knative Serving handles stateless HTTP services, including deployment, routing, and scaling; it can scale services to zero while idle and back up when traffic arrives. Serving also supports blue-green deployments, canary releases, and traffic splitting between revisions. Knative Eventing routes asynchronous events using CloudEvents over HTTP, while Knative Functions provides a framework for deploying stateless functions as containers. Installation can use a local quickstart or a production setup on an existing Kubernetes cluster, with YAML or the Knative Operator. The project runs on Kubernetes across cloud providers and on-premises environments, and installation platforms listed are Linux, macOS, and Windows. Networking integrations include Istio, Contour, and Gateway API; messaging options include Kafka, RabbitMQ, and NATS. Knative relies on Kubernetes security capabilities such as RBAC and namespace isolation. It is free, with a self-managed Kubernetes-based installation.
Good
- Serving can scale stateless services down to zero.
- Supports canary releases and traffic splitting.
- Eventing routes CloudEvents over HTTP.
- Runs on cloud and on-premises Kubernetes clusters.
- Free, open-source project.
Watch out
- Requires a Kubernetes-based installation.
- Alpha features may change incompatibly or be dropped.
- Routing and event transport components need security attention.
Who it suits
Knative suits teams building serverless services, event routes, or containerized functions on Kubernetes. It is relevant to users who can manage a Kubernetes-based installation.
Verdict
Knative brings service scaling, traffic management, event routing, and functions to Kubernetes deployments. Check feature maturity and secure the routing and event transport components you use.
Plans and prices
From Knative's own pricing page, checked 4 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Knative (open-source project) | Free | Kubernetes-based · self-managed installation |
The facts
Each one read from Knative's own pages, with the date it was checked.
What it does
- Autoscaling
- Serving can scale services from zero in response to incoming traffic and scale them back down when idle.checked 4 Oct 2026
- Commercial offerings
- Knative lists commercial products from vendors separately and advises users to check with each vendor about what it supports.checked 4 Oct 2026
- Deployment options
- The installation guide describes local quickstart and production installation on an existing Kubernetes cluster using YAML or the Knative Operator.checked 4 Oct 2026
- Eventing
- Knative Eventing provides asynchronous event routing using CloudEvents over HTTP.checked 4 Oct 2026
- Feature maturity
- The feature documentation says alpha features may contain bugs, change incompatibly, or be dropped without notice, and recommends them only for short-lived testing clusters.checked 4 Oct 2026
- Functions
- Knative Functions provides a framework for building and deploying stateless functions as containers.checked 4 Oct 2026
- Integrations
- Installation documentation lists networking integrations including Istio, Contour, and Gateway API, and messaging integrations including Kafka, RabbitMQ, and NATS.checked 4 Oct 2026
- Portability
- Knative runs on Kubernetes clusters across cloud providers and on-premises environments.checked 4 Oct 2026
- Project origin
- A Knative project release post states that Google released the project in July 2018 in partnership with VMware, IBM, Red Hat, and SAP.checked 4 Oct 2026
- Purpose
- Knative provides Kubernetes middleware for building, deploying, and managing serverless workloads.checked 4 Oct 2026
- Security artifacts
- The threat model says Knative signs project container images and CLI binaries and supplies an SBOM and SLSA provenance statement.checked 4 Oct 2026
- Security model
- Knative relies on Kubernetes security capabilities, including RBAC and namespace isolation, and its threat model recommends securing the chosen routing and event transport components.checked 4 Oct 2026
- Security reporting
- The project asks vulnerability reporters to contact its private security email list, and says reports are investigated by community volunteers.checked 4 Oct 2026
- Serving
- Knative Serving manages stateless HTTP services, including deployment, routing, and automatic scaling.checked 4 Oct 2026
- Traffic management
- Serving supports blue-green deployments, canary releases, and traffic splitting between revisions.checked 4 Oct 2026
Where it runs
- Supported install platforms
- The installation guide lists Linux, macOS, and Windows as supported platforms.checked 4 Oct 2026
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