A CDN gets recommended as a default speed fix in almost every “speed up your website” article. It’s worth understanding what it actually does before deciding whether it’s worth setting up.
What a CDN actually does
A content delivery network stores copies of your static files — images, CSS, JavaScript — on servers in multiple locations around the world. A visitor loads those files from the server closest to them, instead of one server wherever your site is hosted.
Where it actually helps
If your customers are spread across the country or internationally, a CDN meaningfully improves load times for visitors far from your server. It also reduces load on your actual hosting server, since it’s not serving every image to every visitor directly.
Where it matters less
If your business and customer base are both regional, and your hosting is already reasonably close to them, a CDN’s benefit is smaller. It’s not going to fix a fundamentally under-resourced hosting plan, either — it speeds up static file delivery, not server processing.
The honest take
Worth setting up if you have a geographically spread audience or high image use. Not the first thing to reach for if your core problem is unoptimized images or a hosting plan that’s genuinely too small for your traffic — fix those first.