It’s been almost a month that WordPress 4.4 have been released. Between the many additions to it, like the new default theme Twenty Sixteen, an better support for responsive images and many forms of embed posts, one point was he highlight of this update:
Rest! And I don’t mean a ciesta, I mean WordPress 4.4 REST API.
If you are not familiar with rest, you should really check the official REST API page.
But hey, I should you and I bother about REST?
In a world where we are all trying to squeeze every byte, trying to make pages lighter and lighter, RESTful applications can alleviate the load on your server.
More info about it: Learn REST