JAMStack, an architecture focusing on Javascript, APIs, and HTML markup, is gaining traction in web development by enabling the decoupling of front-end and back-end components, allowing developers to create applications without the need for a database and optional web servers. Gatsby.js, a leading JAMStack platform based on React.js, facilitates the building of high-speed web apps. This tutorial guides readers through deploying a Gatsby.js site on Heroku using CircleCI for continuous integration, emphasizing the creation of a Gatsby project, setting up a Heroku app with necessary buildpacks, and configuring a CircleCI pipeline with environment variables for deployment. By leveraging CircleCI orbs, which simplify deployment processes into single-line commands, developers can streamline the deployment of applications to Heroku, ensuring all code changes are automatically reflected online. The tutorial concludes by encouraging exploration of CircleCI orbs across different programming languages and deployment destinations to enhance coding and deployment efficiency.