Traditional monolithic Content Management Systems (CMS) like WordPress, Drupal, and Joomla were once dominant, but the rise of new technologies has led to the emergence of Headless CMS, which separates the frontend presentation from the backend. This modern approach allows for greater flexibility, scalability, and multichannel content delivery, catering to diverse digital platforms like websites, mobile apps, and IoT devices. Headless CMSs, such as Prismic and Contentful, adopt an API-first strategy, enabling efficient content management and improved developer experiences by allowing integration with various frontend technologies. They offer benefits such as enhanced scalability, reduced development times, and future-proofing, allowing businesses to adapt to new technologies without altering content or the CMS itself. While requiring more technical expertise, they provide a single source of truth for content, eliminate manual updates, and improve SEO performance through static site generators. Headless CMS is ideal for projects needing high flexibility, custom user experiences, and multichannel content delivery, although they can incur higher initial development costs.