# Jamstack "Jamstack" was originally cased as "JAMstack" where "JAM" stood for JavaScript, API & Markup. Jamstack opened the doors for developers to build sites that were more secure, scalable, performant, and cost-effective in an era when those achievements were earned with a headache at best. Jamstack is an architectural approach that decouples the web experience layer from data and business logic, improving flexibility, scalability, performance, and maintainability. Jamstack removes the need for business logic to dictate the web experience. It enables a composable architecture for the web where custom logic and 3rd party services are consumed through APIs.