- Home
- Serverless Platforms
- Knative
Knative
What it is
Knative is free, open-source Kubernetes middleware for building, deploying, and managing serverless workloads. Its Serving component runs stateless HTTP services, handling deployment, routing, and scaling. Services can scale down to zero when idle and respond to incoming traffic by scaling up. Serving also supports blue-green deployments, canary releases, and traffic splitting between revisions. Knative Eventing routes asynchronous events with CloudEvents over HTTP, while Knative Functions helps build and deploy stateless functions as containers. Installation documentation describes a local quickstart and production deployment on an existing Kubernetes cluster using YAML or the Knative Operator. It runs on Kubernetes in cloud-provider and on-premises environments, with Linux, macOS, and Windows listed as supported installation platforms. Networking options include Istio, Contour, and Gateway API; messaging integrations include Kafka, RabbitMQ, and NATS. Knative relies on Kubernetes security capabilities such as RBAC and namespace isolation, and recommends securing the routing and event transport components in use.
For and against
For
- Serving scales services to zero when idle.
- Supports blue-green, canary, and split-traffic deployments.
- Eventing routes CloudEvents over HTTP.
- Runs on Kubernetes across cloud and on-premises environments.
Against
- Requires an existing Kubernetes cluster for production installation.
- Alpha features may change incompatibly or be dropped.
- Security depends partly on Kubernetes and chosen transport components.
The verdict
Knative provides Kubernetes-native components for services, events, and containerized functions, with several deployment and traffic-management options. Teams should account for Kubernetes operations and treat alpha features as suitable only for short-lived testing clusters.
Who it suits
Knative suits developers and platform teams building or operating serverless workloads on Kubernetes. It may also fit teams that need event routing, function deployment, or traffic management across cloud and on-premises clusters.
Plans and prices
Knative (open-source project)
Kubernetes-based · self-managed installation
Read 4 Oct 2026 · knative.dev
On the record
- Autoscaling
- Serving can scale services from zero in response to incoming traffic and scale them back down when idle.knative.dev · read 4 Oct 2026
- Commercial offerings
- Knative lists commercial products from vendors separately and advises users to check with each vendor about what it supports.knative.dev · read 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.knative.dev · read 4 Oct 2026
- Eventing
- Knative Eventing provides asynchronous event routing using CloudEvents over HTTP.knative.dev · read 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.knative.dev · read 4 Oct 2026
- Functions
- Knative Functions provides a framework for building and deploying stateless functions as containers.knative.dev · read 4 Oct 2026
- Integrations
- Installation documentation lists networking integrations including Istio, Contour, and Gateway API, and messaging integrations including Kafka, RabbitMQ, and NATS.knative.dev · read 4 Oct 2026
- Portability
- Knative runs on Kubernetes clusters across cloud providers and on-premises environments.knative.dev · read 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.knative.dev · read 4 Oct 2026
- Purpose
- Knative provides Kubernetes middleware for building, deploying, and managing serverless workloads.knative.dev · read 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.knative.dev · read 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.knative.dev · read 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.knative.dev · read 4 Oct 2026
- Serving
- Knative Serving manages stateless HTTP services, including deployment, routing, and automatic scaling.knative.dev · read 4 Oct 2026
- Supported install platforms
- The installation guide lists Linux, macOS, and Windows as supported platforms.knative.dev · read 4 Oct 2026
- Traffic management
- Serving supports blue-green deployments, canary releases, and traffic splitting between revisions.knative.dev · read 4 Oct 2026
