A "headless" CMS is a content management system that separates the backend content management functions from the frontend presentation layer. This means that the content is stored and managed independently of how it will be presented, allowing for more flexibility and faster development. One of the main benefits of a headless CMS is that it allows for easy content reuse across multiple channels and devices, such as websites, mobile apps, and digital signage. Additionally, headless CMSs are more easily scalable and integrate with a wide range of third-party applications and services, making them an excellent option for larger and more complex projects. Finally, because the content is decoupled from the presentation layer, updates and changes to the frontend can be made quickly and easily without affecting the backend.