Building a CMS-Agnostic Layout Service Response in Sitecore
Building a CMS-Agnostic Layout Service Response in Sitecore Introduction In modern headless architectures, frontend teams (especially Next.js) expect clean, predictable, and CMS-agnostic APIs. However, Sitecore Layout Service by default returns: Nested fields.value structures Media, links, and other field types follow Sitecore-specific structures CMS-specific field types This makes frontend consumption complex and tightly coupled to Sitecore. In this blog, I’ll walk through how I built a CMS-agnostic Layout Service response, including solving one of the trickiest problems: 👉 Expanding Multilist fields dynamically with full field data Problem Statement Sitecore Layout Service provides a powerful way to expose content for headless applications. However, the default response is highly CMS-dependent and not ideal for modern frontend frameworks like Next.js. For example: Fields are wrapped in fields.value Field names are not normalized Media, links, and other fi...