Cloudflare works by sitting between your visitors and your web server, so that every request passes through Cloudflare’s network before it reaches you. That position lets it cache content close to users, filter malicious traffic, and absorb attacks before they touch your infrastructure.
Nothing needs to be installed on your server. The change happens at the domain name level: you point your domain’s nameservers at Cloudflare, and traffic starts flowing through their network instead of directly to your origin.
What Cloudflare Actually Is
Cloudflare is a reverse proxy network. A reverse proxy is a server that receives requests intended for another server, decides what to do with them, and forwards on what should be forwarded.
The network part is the scale: Cloudflare operates points of presence in hundreds of cities. When someone visits your site, they connect to whichever one is closest to them, not to your origin server.
That single architectural fact produces most of the benefits. The visitor’s connection is short, your server sees less traffic, and anything malicious can be stopped at the edge rather than at your door.
How a Request Travels Through Cloudflare
Six things happen between someone typing your address and seeing your page.
- DNS resolution. The browser asks where your domain lives. Cloudflare’s DNS answers with the address of the nearest point of presence, not your server.
- Connection to the edge. The browser connects to that nearby location. The encryption handshake happens there, close to the user, rather than across the world.
- Security evaluation. The request is checked against firewall rules, bot scoring, rate limits, and threat intelligence. Malicious requests stop here and never reach you.
- Cache lookup. If the content is already stored at that location and still fresh, it is served immediately. Your server is not contacted at all.
- Origin fetch. If the content is not cached — a logged-in page, a fresh database query — Cloudflare requests it from your server over an optimised connection.
- Response and caching. The response goes back to the visitor, and cacheable parts are stored at the edge for the next person.
What Cloudflare Does at Each Stage
Those stages map to distinct products, which is why the platform looks complicated from the outside.
Content delivery handles steps 4 and 6 — the caching that makes distant visitors fast and reduces load on your origin.
The web application firewall handles step 3, inspecting requests for attack patterns before they reach your application.
Bot management also sits at step 3, scoring whether a request comes from a human or from automation, then acting on the answer.
Zero Trust access applies when the resource is private rather than public — the request is checked against identity and device policy before being allowed through.
Each of these is a separate product commercially, but they all operate at the same architectural point: the edge, before your server is involved.
What Changes When You Turn It On
Your server sees less traffic. Most requests are answered from cache. Hosting bills often fall as a direct consequence.
Pages load faster for distant visitors. Someone far from your origin gets content from a nearby location instead of a long round trip.
Attacks stop reaching you. Volumetric attacks are absorbed by the network, and automated scanning is filtered before it hits your application.
What does not change: your website’s code, your hosting arrangement, or how you publish content. Cloudflare sits in front of the existing setup rather than replacing it.
FAQ
No. Your site stays where it is hosted. Only the DNS changes, so traffic routes through Cloudflare on its way to your existing server.
Yes, for the core proxy, caching, and security functions. It is host-agnostic and platform-agnostic — content management systems, hosted store platforms, custom applications, and static sites all work the same way.
Yes, for a small site. The free tier includes the content delivery network, unmetered protection against volumetric attacks, and shared SSL. What it does not include is an uptime guarantee, log export into your own monitoring, granular security rules, or support with a response commitment — which is why organisations carrying contractual or compliance obligations move up.
Anyone can sign up for Cloudflare’s free plan in ten minutes, and for a small site that is often the right starting point. What it does not give you is a contractual uptime commitment, log delivery into your own monitoring, granular firewall and bot rules, or someone accountable when something breaks at 2am.
That is the point where businesses move to Cloudflare Enterprise, and where the configuration stops being a checkbox exercise. ANP Technology handles enterprise deployments end to end — sizing the plan against real traffic and risk, migrating without downtime, and configuring caching, security and routing to match how the business actually runs.
