> For the complete documentation index, see [llms.txt](https://cloud.secondstate.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cloud.secondstate.io/master.md).

# What is Second State?

## This page is outdated. Please [visit here for the most up-to-date content](https://www.secondstate.io/articles/why-webassembly-server/).

Second State builds the next generation open source “operating system” for the cloud and the decentralized web. The Second State Virtual Machine (SSVM) is a WebAssembly runtime optimized for server-side applications. It works seamlessly with existing application frameworks, such as Node.js, but provides a secure and lightweight runtime at native performance. It is a managed alternative to native code, and is ideal for building AI and big data microservices. [Check out why](/server-side-webassembly/why.md) you want to use WebAssembly on the server-side.

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Node.js and Rust developers [get started here](/server-side-webassembly/getting-started.md)! Create high performance Rust + JavaScript hybrid apps in Node.js.
{% endhint %}

The SSVM also powers decentralized applications as the execution engine for leading public blockchains, such as [Ethereum 2.0](https://blog.secondstate.io/post/20191022-soll-compiler-project/), [Ethereum Classic](https://blog.secondstate.io/post/20190901-etc-partners-with-secondstate/), [Polkadot / Web3](https://blog.secondstate.io/post/20200302-polkadot-en/), [Oasis](https://www.coindesk.com/a16z-leads-45-million-raise-for-blockchain-startup-oasis-labs), and [CyberMiles](https://docs.secondstate.io/buidl-developer-tool/getting-started/develop-for-cybermiles). If you are interested in our blockchain-related technologies, [check out here](https://docs.secondstate.io).

Second State is a Venture Capital backed startup with offices in USA, Taiwan, China, and Australia.