6 min read
What is a headless website, and when is it worth it?
Headless is a word that sells better than it explains. Behind it sits one simple idea: the system you write in and the website your visitor sees do not have to be the same thing.
How an ordinary WordPress site works
When somebody opens an ordinary WordPress site the server starts from nothing. It wakes PHP, asks the database a series of questions, runs the plugins, assembles the layout and finally sends the page. This happens again from scratch for every single visitor.
That works well enough when few people are on the site and slows as more arrive, which is exactly backwards from what you want when a campaign goes live.
What headless does differently
In a headless setup WordPress stays your editor. You log in where you always did and write the way you always have. The difference is that the visitor never sees WordPress. The content is fetched from it in advance and the pages are built ready.
When a visitor arrives there is nothing left to compute. The page is already built and simply gets delivered. That is the reason for the speed difference, not some magic in newer technology.
What actually changes
Speed is the obvious difference and the measurable one. Security changes too: there is no login area on the public site and no plugins in the front line, so the surface anyone can attack is far smaller.
The other change is what you control. The design is no longer limited to what a theme permits, and the content sits in a system you can move out of. You are not changing who owns your site, you are stopping renting it.
When it is not worth it
If your site is five pages that change once a year and nobody complains about the speed, headless is overkill. You would be paying for flexibility you never use.
It pays off when one of these is true: the site is slow and the images are already handled, it needs to talk to a booking system or product catalogue, or you have started working around the limits of your theme rather than with it.
Headless is not a goal in itself. It is an answer to two problems, speed and integrations. If you have neither, there is no reason to switch.