The new trend of 'headless' in the webs development industry has been a little confusing for many but the ones who have understood, know the real importance it is going to play in the industry. 
Being ‘Headless’ definitely does not mean that the CMS is missing the header section. It means that you can use the CMS as a generic content management system irrespective of the technology used to build the front-end.
Rest API allows developers to interact with cross-technology interfaces as long as both speak the same language of JSON. WordPress Rest API spits out data in JSON format which is understandable by a large number of web technologies. JSON is a text-based representation of JavaScript objects which contains data in key-value pairs.
This is a major part of the JAMstack revolution in this industry that has disrupted the industry massively due to its benefits. There are various benefits of JAMstack that are attracting various businesses to switch over to headless commerce from traditional commerce. 
The traditional CMS which is coupled has been useful for many users in terms of building a website and managing it but in that the front end and backend are interconnected due to which the server load is too much.
A headless CMS decouples these two parts, leaving only the back end intact. You have your database, your admin panel, and your content management tools – but no theme or website. However, using the REST API, you can hook anything to it – an app, a custom-built website, the list goes on. The implications of this are enormous for developers.
The best way to utilize this is to get in touch with a headless commerce development company that has been doing this for a long time now. They can take care of it end-to-end and build a great headless commerce website for your brand in 6-8 weeks. 
Why Switch to Headless WordPress?
Now that we’ve covered what headless WordPress is in a general sense, let’s talk about the advantages of using it. One of the primary reasons to opt for this over a more traditional WordPress installation is to simplify multichannel content publishing. That’s the process of posting content on more than one platform at the same time. This can include your business’ calendar, social media platforms, and even the Internet of Things (IoT).
By removing the front end, headless WordPress can be easily integrated into many different ‘stacks’. A stack is essentially the infrastructure of an app or digital product. Multichannel publishing can be a huge time saver if your business has many channels to maintain. Instead of reformatting content for each platform separately, you’ll only need to publish once.
This can be crucial, especially for large companies with dozens of target platforms to keep track of. Instead of having to constantly reformat your posts, you can set up headless WordPress to automatically share new content on all the channels that matter to you. This can free up your staff to work on more important tasks – such as creating and marketing that content.
Another advantage of headless WordPress is that it can improve your website’s speed. Performance is important for Search Engine Optimization (SEO), as well as for user experience. About 40% of people will abandon a site that takes over three seconds to load. Headless WordPress speeds up your site and helps you avoid that problem since it simplifies the process by which content loads on the user’s end. That can make it an invaluable tool for large and complex sites. There are many other benefits of JAMstack revolution due to which headless WordPress is gaining popularity.
So, if you are planning to shift to headless WordPress then it might be the best decision you will make for your eCommerce business because this is certainly the future of the eCommerce industry.