Fission

Spec sheet

What it does

Fission is an open-source framework for running serverless functions on Kubernetes and mapping them to HTTP requests or other event triggers.Read 4 Oct 2026 · fission.io

Product

Fission is an open source framework for running serverless functions on Kubernetes.Read 5 Oct 2026 · fission.io

Deployment

Fission deploys functions with one command without requiring users to build containers or manage Docker registries.Read 4 Oct 2026 · fission.io

Integrations

The homepage says Fission integrates with Fluentd for CLI logs, Prometheus for metrics, and Istio for service mesh monitoring and tracing.Read 5 Oct 2026 · fission.io

Security

Function invocation authentication is optional and can be enabled on the Fission Router using tokens passed in an Authorization header.Read 5 Oct 2026 · fission.io

Support

The project directs users to its Slack community and provides troubleshooting guides and a CLI command for collecting support diagnostics.Read 5 Oct 2026 · fission.io

License

Fission is open source under the Apache License.Read 5 Oct 2026 · fission.io

CLI platforms

The installation guide provides CLI installation instructions for macOS, Linux, and Windows.Read 4 Oct 2026 · fission.io

Cold starts

Fission keeps warm containers available, with typical cold starts around 100 milliseconds.Read 5 Oct 2026 · fission.io

Deployment options

Fission runs on Kubernetes clusters on a laptop, in a public cloud, or in a private data center.Read 5 Oct 2026 · fission.io

Developer workflow

Fission supports declarative specifications that can be checked into source control and used to recreate an application.Read 5 Oct 2026 · fission.io

Event sources

The docs list message queue trigger integrations for Apache Kafka, AWS SQS, AWS Kinesis, GCP Pub/Sub, NATS, RabbitMQ, and Redis Lists.Read 5 Oct 2026 · fission.io

Function deployment

Fission maps short-lived functions to HTTP requests or other event triggers and deploys them with one command, without requiring users to build containers or manage Docker registries.Read 5 Oct 2026 · fission.io

Intended use

The homepage describes building serverless API backends, implementing webhooks, and writing Kubernetes event handlers as Fission use cases.Read 5 Oct 2026 · fission.io

Kubernetes requirement

Fission v1.27.0 requires Kubernetes 1.32 or higher.Read 4 Oct 2026 · fission.io

Languages

The documentation lists Node.js, Python, Go, Ruby, PHP, Bash, and custom container images as supported runtimes.Read 5 Oct 2026 · fission.io

Observability integrations

Fission integrates with Fluentd for logs, Prometheus for metrics, and Istio for service mesh monitoring and request-latency tracing.Read 4 Oct 2026 · fission.io

Portability

Fission runs on Kubernetes clusters on laptops, public clouds, or private data centers.Read 4 Oct 2026 · fission.io

Queue integrations

KEDA-backed queue connectors include Kafka, NATS JetStream, RabbitMQ, Redis, AWS SQS, AWS Kinesis, and GCP Pub/Sub.Read 4 Oct 2026 · fission.io

Support and community

The site invites users to join its Slack community to interact with the team, other users, and contributors.Read 4 Oct 2026 · fission.io

Tenant isolation

The multi-namespace tenancy guide says each onboarded namespace receives its own narrow RBAC permissions and derived signing key.Read 5 Oct 2026 · fission.io

Triggers

Documented trigger types include HTTP, timers, message queues through KEDA, and Kubernetes watches.Read 5 Oct 2026 · fission.io

Who it is for

Fission describes use cases including serverless API backends, webhooks, and handlers for Kubernetes resource changes.Read 4 Oct 2026 · fission.io

Where Specifiction places it

• Serverless Platforms#12 of 287.7