A headless CMS makes content accessible via an API for display on any device, without a built-in front end or presentation layer.
[2] Cloud-first headless CMSes are those that were also built with a multi-tenant cloud model at their core and whose vendors promote software as a service (SaaS).
[3][4] Headless commerce uses the same setup to separate back-end product management and navigation from the front end of a website or other display types (e.g., IoT).
[citation needed] This makes back-end user tools, content editing and taxonomy, website design, and templates inseparable.
[11] The main downside is that it may require more effort to set up and configure and a certain level of web development knowledge on both the front and back end.