AWS Serverless Application Model (AWS SAM) vs Fission

ASAWS Serverless Application Model (AWS SAM)9.1Visit Fission8.2Visit

Higher score AS AWS Serverless Application Model (AWS SAM) #2 in Serverless Development Frameworks 9.1/10 Free plan Free plan✓ 0 of 4 features Visit AWS SAM

vs

Fission #7 in Serverless Development Frameworks 8.2/10 Open source ✓ 0 of 4 features Visit Fission

• AWS Serverless Application Model (AWS SAM) fits best

  AWS teams wanting templates and local debugging

• Fission fits best

  Kubernetes teams needing scalable event-triggered functions

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Side by side

Feature	ASAWS Serverless Application Model (AWS SAM) 9.1/10 Visit ↗	Fission 8.2/10 Visit ↗
At a glance
Editor score	9.1	8.2
Ranking	#2 in Serverless Development Frameworks	#7 in Serverless Development Frameworks
Best for	AWS teams wanting templates and local debugging	Kubernetes teams needing scalable event-triggered functions
Pricing model	Free	Free
Starting price	Free plan	Open source
Free plan	✓ (best)	Not checked yet
Free trial	—	—
Deployment	Self-hosted	Desktop, Self-hosted
Platforms	Linux, macOS, Windows	Linux, macOS, Windows
Integrations	4 integrations	7 integrations
Features AWS Serverless Application Model (AWS SAM) 0/4 · Fission 0/4
Local testing	Not checked yet	Not checked yet
Application packaging	Not checked yet	Not checked yet
Kubernetes support	Not checked yet	Not checked yet
Deployment rollback	Not checked yet	Not checked yet
Specs
Deployment targets	Not checked yet	Not checked yet
Supported languages	Not checked yet	Not checked yet
Deployment model	Not checked yet	Not checked yet
Our review
Pros	Defines AWS serverless resources in shorthand YAML templates. Supports local Lambda invocation, testing, and debugging. Builds, packages, deploys, syncs, and manages CI/CD pipelines.	Supports HTTP, timer, queue, and Kubernetes event triggers. Automatically provisions and scales function pods. Offers streaming responses and Prometheus and Fluentd integration.
Cons	Supports AWS rather than serving as a general multi-cloud framework. AWS resources deployed with SAM incur separate usage charges. Its templates and deployment flow are centered on CloudFormation.	Requires teams to operate the Kubernetes infrastructure themselves. Deployment is CLI-based rather than through a hosted service. Functions use a request-based execution model.
Our verdict	AWS Serverless Application Model (AWS SAM) is an open-source framework and command-line interface for developers building serverless applications on AWS. Its shorthand YAML templates define resources such as functions, APIs, databases, and… Read the review →	Fission brings serverless-style functions to Kubernetes clusters that teams operate themselves. Developers can write short-lived functions, package them in language-specific runtime environments, and expose them through HTTP or event… Read the review →

Strengths and trade-offs

• AWS Serverless Application Model (AWS SAM) — where it wins

  • Defines AWS serverless resources in shorthand YAML templates.
  • Supports local Lambda invocation, testing, and debugging.
  • Builds, packages, deploys, syncs, and manages CI/CD pipelines.

  Where it doesn't

  • Supports AWS rather than serving as a general multi-cloud framework.
  • AWS resources deployed with SAM incur separate usage charges.
  • Its templates and deployment flow are centered on CloudFormation.

• Fission — where it wins

  • Supports HTTP, timer, queue, and Kubernetes event triggers.
  • Automatically provisions and scales function pods.
  • Offers streaming responses and Prometheus and Fluentd integration.

  Where it doesn't

  • Requires teams to operate the Kubernetes infrastructure themselves.
  • Deployment is CLI-based rather than through a hosted service.
  • Functions use a request-based execution model.

• ASAWS Serverless Application Model (AWS SAM)9.1/10 · Free plan

  A free AWS-focused toolkit for defining, deploying, and locally debugging serverless apps.

  Visit AWS SAMFull verdict →
• Fission8.2/10 · Open source

  A self-hosted way to run event-triggered functions on Kubernetes, with automatic scaling.

  Visit FissionFull verdict →