Traditional content platform architectures leverage a coupled management and delivery model, in which the same product and application both manages content via a CMS interface and delivers the end experience though web page templates in the CMS. The focus is often web as the primary channel of use since that was the predominant channel of the past.
More recently, there has been a big push toward omnichannel content management with the proliferation of many different devices and channels — web, native mobile apps, social media, voice apps, chatbots, email — you name it. This omnichannel need has resulted in many pure play headless CMS platforms emerging, or traditional products providing headless APIs (which is called Hybrid CMS and a whole topic for another time).
