Gatsby Cloud has launched Functions, a new feature that allows developers to incorporate dynamic capabilities into their Gatsby websites without maintaining additional infrastructure. These serverless functions enable developers to add functionalities such as authentication, form submissions, and real-time data updates by writing code directly in their Gatsby projects, which is then executed on Gatsby's edge network. The implementation of Functions follows patterns from the Express web app framework, allowing for easy data handling via request and response objects. Functions are version-controlled and integrated into Pull Request builds, providing a seamless experience for deploying and testing new features. With this release, Gatsby Cloud aims to simplify the process of adding interactive features to static sites, aligning with the trend of serverless architectures that reduce the need for infrastructure management. Developers can start using Functions by upgrading to the latest version of Gatsby and following the provided examples to integrate new functionalities into their sites.