![Crypto Terms Glossary: What is Cosmos Software Development Kit (SDK)? Crypto Terms Glossary: What is Cosmos Software Development Kit (SDK)?](/img/195/336/what-is-cosmos-software-development-kit-sdk-sm.webp)
The Cosmos Software Development Kit (SDK) is a framework that allows developers to build Proof-of-Stake (PoS) and Proof-of-Authority (PoA) blockchains. The framework is designed to construct application-specific blockchains rather than more generalized virtual machine-based blockchains. The Cosmos SDK is a scalable, open-source infrastructure, and is used to build blockchain platforms such as the Cosmos Hub.