What is Knative and what does it do?

Knative is a set of building blocks for running serverless workloads on Kubernetes. It gives you a way to deploy and scale HTTP and event-driven applications without managing the underlying scaling and infrastructure details yourself. It runs on top of an existing Kubernetes cluster rather than replacing it, and it is a Cloud Native Computing Foundation graduated project built by the community.

The two components

Knative is organized around two main components that work together:

• Serving — runs and scales your workloads. It handles HTTP/2, gRPC, and MCP traffic, and scales a workload up or down on demand as requests arrive.
• Eventing — routes and handles asynchronous events using the same patterns you use for HTTP. It can extract events from existing services or let you define your own, with Kubernetes-integrated Trigger handlers driven from an event broker.

What problem it solves

Serverless gives you a vocabulary for expressing web and event-based applications without getting mired in scaling and infrastructure libraries. Knative applies that model to Kubernetes: behind the scenes it optimizes your deployment to match demand, so you describe the application and let the platform handle capacity.

The site frames this as "the easiest way to build and run serverless workloads on Kubernetes," aimed at modern cloud-native teams.

Where it fits relative to Kubernetes

Knative does not replace Kubernetes. It sits above the cluster and provides serverless abstractions on top of it. The project describes itself as Kubernetes-native and pluggable, meaning it is designed to be integrated and extended within a Kubernetes environment.

Common use cases

• Functions — application template patterns you can version and update.
• HTTP-first services — serve and scale HTTP/2, gRPC, and MCP.
• Event-based applications — route and handle asynchronous events just like HTTP.
• Event integrations — pull events from existing services or define your own, then trigger handlers from the event broker.

The site also cites teams using Knative Eventing to centralize systems, enforce policies, simplify architecture, and bridge processes between Apache Kafka and CI/CD toolchain events.

How to get started

The project points to two entry paths: try the tutorial, or install Knative on your cluster. Both assume you already have a Kubernetes cluster to work with.

When Knative is a good fit

Choose Knative if you are already on Kubernetes and want serverless behavior — on-demand scaling and event routing — without adopting a separate platform. If you want to build a function-as-a-service on top of Knative, the Serving framework is what lets a workload scale up and down as requests come in. If you are not running Kubernetes, or you do not need HTTP and event-driven scaling abstractions, the value is less clear.