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Head-to-head · Serverless Development Frameworks

Spring Cloud Function vs OpenFaaS

  • Updated Oct 2026
  • Both researched from official sources
  • 5 checks side by side
Higher score Spring Cloud Function #4 in Serverless Development Frameworks 8.7/10 Free plan Free plan✓ 2 of 4 features Visit site
OpenFaaS #6 in Serverless Development Frameworks 8.4/10 Free plan · 14-day trial Free planFree trial✓ 0 of 4 features Visit OpenFaaS

Spring Cloud Function leads on 0 checks, OpenFaaS on 0, and 5 are even. Who comes out ahead on the 5 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreSpring Cloud Function · 8.7/10
  • Free planboth
  • Free trialonly OpenFaaS
  • Most featuresSpring Cloud Function · 2 of 4

Spring Cloud Function scores higher on our rubric for serverless development frameworks: 8.7 against 8.4 out of 10; our editors rank them #4 and #6.

Spring Cloud Function is the better fit for java teams targeting several cloud function providers. OpenFaaS is the better fit for teams deploying containerized functions on Kubernetes.

  • Spring Cloud Function fits best

    Java teams targeting several cloud function providers

  • OpenFaaS fits best

    Teams deploying containerized functions on Kubernetes

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Side by side

Feature Spring Cloud Function 8.7/10 Visit ↗ OpenFaaS 8.4/10 Visit ↗
At a glance
Editor score 8.7 8.4
Ranking #4 in Serverless Development Frameworks #6 in Serverless Development Frameworks
Best for Java teams targeting several cloud function providers Teams deploying containerized functions on Kubernetes
Pricing model Free Free plan + paid
Starting price Free plan $1,250/mo
Free plan ✓ ✓
Free trial — 14 days
Deployment Cloud, Self-hosted Cloud, Desktop, Self-hosted
Platforms Web Web, Linux
Integrations 5 integrations 11 integrations
Features Spring Cloud Function 2/4 · OpenFaaS 0/4
Local testing ✓ (best) Not checked yet
Application packaging ✓ (best) Not checked yet
Kubernetes support — Not checked yet
Deployment rollback — Not checked yet
Specs
Deployment targets Multi_cloud Not checked yet
Supported languages Java Not checked yet
Deployment model Cloud_functions Not checked yet
Our review
Pros
  • Adapters target AWS Lambda, Azure Functions, and Google Cloud Functions
  • Supports imperative, reactive, and hybrid programming styles
  • Includes function composition, packaging, and local testing workflows
  • Deploy to Kubernetes, K3s, OpenShift, or a single host with faasd
  • Supports event connectors including Kafka, RabbitMQ, and PostgreSQL
  • Offers language templates plus custom container images and runtimes
Cons
  • Centers on a programming model, not end-to-end infrastructure deployment
  • No documented Kubernetes deployment capability
  • No documented deployment rollback capability
  • Community Edition limits deployments to 15 functions and one namespace
  • Private function registries and scale-to-zero require a paid plan
  • Standard starts at $1,250 per month
Our verdict

Spring Cloud Function is an open-source framework for implementing business logic as functions with the Spring programming model. It suits Java teams that want to keep function code separate from a specific runtime target and run it as a…

Read the review →

OpenFaaS is a self-hosted serverless platform for teams deploying event-driven functions and microservices as OCI container images. It targets Kubernetes, K3s, OpenShift, and single-host deployments with faasd, and is designed for cloud,…

Read the review →
  1. Spring Cloud FunctionServerless Development Frameworks 8.7Free plan
  2. OpenFaaSServerless Development Frameworks 8.4Free plan · 14-day trial

Strengths and trade-offs

  • Spring Cloud Function — where it wins

    • Adapters target AWS Lambda, Azure Functions, and Google Cloud Functions
    • Supports imperative, reactive, and hybrid programming styles
    • Includes function composition, packaging, and local testing workflows

    Where it doesn't

    • Centers on a programming model, not end-to-end infrastructure deployment
    • No documented Kubernetes deployment capability
    • No documented deployment rollback capability

  • OpenFaaS — where it wins

    • Deploy to Kubernetes, K3s, OpenShift, or a single host with faasd
    • Supports event connectors including Kafka, RabbitMQ, and PostgreSQL
    • Offers language templates plus custom container images and runtimes

    Where it doesn't

    • Community Edition limits deployments to 15 functions and one namespace
    • Private function registries and scale-to-zero require a paid plan
    • Standard starts at $1,250 per month
  • Spring Cloud Function8.7/10 · Free plan

    An open-source Spring programming model for packaging and adapting Java functions across clouds.

    Visit siteFull verdict →
  • OpenFaaS8.4/10 · Free plan · 14-day trial

    A self-hosted, container-based serverless platform with broad Kubernetes targets and paid scale-to-zero.

    Visit OpenFaaSFull verdict →

More comparisons

All serverless development frameworks comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update