What Is a Proxy Server and How Does It Work?

Proxies are the backbone of web scraping, automation and online privacy — but what actually is a proxy server, and how does it work? This guide explains the fundamentals in plain English.

How a proxy server works

A proxy server sits between your device and the website you want to reach. When you send a request, it goes to the proxy first; the proxy forwards it to the target using its own IP address, receives the response, and passes it back to you. The website only ever sees the proxy's IP — not yours.

Why that matters

• Privacy: your real IP stays hidden from the target site.
• Location control: choose an IP in a specific country to see localised content.
• Scale: spread requests across many IPs so you aren't rate-limited or blocked.

The main types of proxy

Proxies differ mainly by where their IPs come from:

• Residential proxies use real home IPs — hardest to block.
• Datacenter proxies are server-hosted — fastest and cheapest.
• Mobile proxies use 4G/5G carrier IPs — highest trust.
• Static residential (ISP) proxies give you a fixed residential IP.

For a deeper comparison, read residential vs datacenter proxies.

Proxy vs VPN

A VPN tunnels and encrypts everything from your device, mainly for personal privacy. A proxy handles traffic at the request or application level and is built for scale — which is why data teams and automators use pools of proxies rather than a single VPN connection.

Common use cases

• Web scraping and data collection
• Price and SERP monitoring
• Ad verification across regions
• Managing multiple accounts safely
• Accessing geo-restricted content

Getting started

Pick the proxy type that matches your target's defences, choose rotating or sticky sessions, and point your tool at the proxy endpoint. Browse all proxy types to find the right fit.