Serverless Framework

Definition

The Serverless Framework is an open-source command-line tool for building, packaging, and deploying serverless applications — functions, APIs, and event triggers — to AWS Lambda and other cloud providers using a single declarative configuration file.

Overview

First released around 2015 (originally under the name "JAWS"), the Serverless Framework was one of the earliest tools to make AWS Lambda approachable for everyday application development, abstracting away much of the manual work of configuring API Gateway, IAM permissions, and event sources. Developers define functions, their triggers — HTTP requests, queue messages, scheduled events — and required cloud resources in a single serverless.yml configuration file. Running a single deploy command packages the function code and provisions the underlying infrastructure automatically (via CloudFormation on AWS, or an equivalent mechanism on other clouds), and a large plugin ecosystem adds capabilities like offline local testing, custom domains, and monitoring. The framework supports AWS Lambda alongside Azure Functions, Google Cloud Functions, and other providers, giving teams a common workflow across serverless platforms. It's often used alongside Terraform in organizations that mix serverless functions with broader infrastructure-as-code, and deployed through GitHub Actions or similar CI/CD pipelines.

Key Features

• Declarative serverless.yml configuration describing functions, triggers, and resources
• One-command deploy that provisions cloud infrastructure automatically
• Multi-cloud support spanning AWS Lambda, Azure Functions, and Google Cloud Functions
• Large plugin ecosystem for offline emulation, custom domains, and monitoring
• Built-in support for API Gateway, event sources, and IAM permission generation
• Stage-based deployments for separate dev, staging, and production environments

Use Cases

Frequently Asked Questions

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