What is a headless CMS and how does it work?

Online shopping rarely begins and ends on a brand’s own website. Consumers engage with brands across a wide range of digital channels – from search engines and AI search engines to AI assistants, voice assistants, mobile apps, and social media. They expect each of these touchpoints to feel intuitive and highly personalised.

Delivering exceptional experiences across every channel, and doing so at pace, is increasingly the benchmark for standing out. Yet for developers – particularly those working with legacy or fragmented content management systems (CMS) – this presents a significant challenge.

In response, organisations of all sizes are increasingly turning to a headless CMS to accelerate and add agility to their digital experiences.

• What is a headless CMS?
• Benefits of a headless CMS
• Headless CMS use cases
• Why use a headless CMS?

A ‘headless’ CMS is a content management system that enables you to draw content from a CMS and deliver it to any front end using your chosen framework. It separates content from the presentation layer (the head), creating blocks of content that can be delivered in a channel-neutral format to power any channel or experience. This means you can create content once and reuse it everywhere.

Headless content management systems expose content as JavaScript Object Notation (JSON) through well-defined APIs, such as GraphQL or RESTful APIs. Brands then determine how to construct their front end – typically using technologies such as Node.js to build dynamic websites. In either case, the CMS does not define the presentation layer.

Watch the video below to see Adobe Experience Manager Sites headless CMS in action and discover how it can support your omnichannel content strategy.

A headless CMS vs. a traditional CMS

Where a headless CMS decouples content from presentation – enabling the same content to appear across any channel or device – a traditional CMS binds them together. As a result, a traditional CMS typically delivers content through a single channel, usually a web browser. A headless CMS, by contrast, uses APIs to serve a single set of content across multiple channels. This is why it is sometimes referred to as an ‘API-first’ CMS.

The table below sets out in detail why a headless CMS offers greater flexibility and supports a wider range of use cases than a traditional CMS.

As brands grow, they add new channels – such as new social accounts, mobile apps, and so on. Without a headless CMS, brands can find themselves duplicating content across multiple platforms, slowing down workflows and reducing content velocity. For example, they may need to customise, code, and upload the same piece of content into a website CMS, a mobile app CMS, and an IoT framework.

A headless CMS removes these redundancies by consolidating content in a single hub, delivering a better customer experience whilst making it easier for developers to build and deploy quickly. Below are just some of the benefits of a headless CMS.

An effective developer experience

A headless CMS enables developers to work faster and more effectively. Back-end and front-end developers can work in parallel, provided their efforts are well-coordinated. Developers are also no longer constrained by a specific application stack when building an experience. With a headless CMS, they can choose the tools and frameworks they are most comfortable with to build purpose-built applications that deliver content via APIs connected to back-end content repositories.

Tip: The Adobe Developer Portal for AEM Headless is an excellent resource for developers looking to learn more about working with a headless CMS.

Simple content updates

Content is in constant flux – product specifications evolve and marketing messages shift. Maintaining multiple traditional CMS platforms means every piece of content on every channel must be updated individually. A headless CMS removes that complexity: update content once and publish it everywhere in a single push.

Smoother and faster scaling

Relying on multiple traditional content management systems makes adding new channels and touchpoints a considerable undertaking – requiring a new CMS installation, a fresh learning curve, and the duplication of all your content. With a headless CMS, none of this is necessary. Adding a new channel is simply a matter of connecting the headless CMS to it.

Consistent brand experiences

With multiple traditional content management systems, the same content may need to be coded four or five times to function across as many different front ends – and each version can look and feel subtly different. A headless CMS allows content to be reused without writing new code, delivering a more consistent experience for your customers across every channel.

Greater security and availability

A headless CMS offers stronger security than a traditional CMS. Your content publishing tools are isolated from your content database, and your database and other back-end resources remain inaccessible from front-end display solutions – reducing your susceptibility to DDoS attacks. From an availability perspective, if the CMS goes offline, your website continues to operate uninterrupted, as it runs serverless or via a content delivery network (CDN) that is separate from the CMS.

A headless CMS does more than enable a more responsive, content-driven experience – it also supports a wide range of business and technical objectives. Once teams across your organisation recognise its potential, they will be keen to adopt it.

Developers

A headless CMS gives developers the freedom to do what they do best – build faster and deliver exceptional experiences. It enables them to work with their preferred systems and reduce repetitive tasks. For example, there is no need to maintain multiple content repositories or hand-code content updates requested by marketing.

Marketing

A headless CMS frees marketers to focus more time on strategy and content creation, and less on customising content for different channels or managing updates. Instead, they can collaborate on new content and make changes to existing content in one central place.

Ecommerce teams

A headless CMS makes it straightforward to add content and experiences to virtually any storefront via APIs. It also enables your developers to build a highly customised user experience for commerce customers – one that can differentiate your brand. Read more about getting started with headless ecommerce.

A headless CMS enables enterprises to deliver exceptional omnichannel experiences. It is also well suited to organisations growing rapidly that wish to establish a future-proof framework for their IT and marketing teams.

Is a headless CMS right for your organisation? Consider the following questions:

• Is personalising content across channels a slow, cumbersome process?
• Do your developers face a steep learning curve, with limited ability to choose the front-end stacks they’re accustomed to?
• Does your organisation have a static website and wish to move towards a dynamic content experience?
• Is a monolithic system holding your organisation back? Would a more agile, decoupled approach help to streamline your workflows?

If you answered ‘yes’ to any of these questions, it may be time to consider a headless CMS such as Adobe Experience Manager Sites. Our customers are already using it to scale content-powered experiences across all their digital properties.

Find out how Adobe Experience Manager’s headless CMS can help you deliver exceptional experiences everywhere by watching this overview video.