MACH stands for microservices, API-first, Cloud-native, and Headless architecture; They are the cornerstones for creating a composable DXP for the backend part of the platform. as cornerstones of the software solution. Microservices are combined small modular services that form an application. API-first is the approach to how the software is structured. The application's functionality is exposed using APIs, allowing integration with other best-of-breed software. Cloud-native SaaS is how the software is deployed. This means upgrades, maintenance and scaling are handled from one central point.Headless means that the front and the backend are decoupled, and content is served through APIs to different functions and devices that are part of the entire DXP platform. Read on here if you want to dive further into Headless CMS.