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SST (Serverless Stack)

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description SST (Serverless Stack) Overview

SST (Serverless Stack) is an open-source framework that extends AWS CDK, allowing developers to build and deploy full-stack serverless applications efficiently.

help SST (Serverless Stack) FAQ

What was the original SST framework?

The original Serverless Stack, or SST, was an open-source extension of AWS CDK for building serverless applications. Its early feature set included higher-level serverless constructs, Live Lambda Development, esbuild support, and multiple environments and regions. [Serverless Stack GitHub](https://github.com/positioner/serverless-stack)

Does current SST still extend AWS CDK?

That description applies to SST v2. SST v3, released as the Ion deployment engine on 20 August 2024, moved away from CDK and CloudFormation to Pulumi and Terraform-based providers. [SST v3](https://sst.dev/blog/sst-v3)

How does SST help with local development?

The current SST CLI includes an sst dev command that starts a unified local development environment. SST describes this mode as combining a watcher, live functions, frontend and backend processes, and a VPC tunnel where needed. [SST documentation](https://sst.dev/docs)

Is SST free to use?

The open-source framework is free to use, while SST Console is an optional SaaS product for deployment and monitoring. The current documentation says Console includes a free tier. [SST documentation](https://sst.dev/docs)

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