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A proxy server is a server application that stands between you and your target server. You can send a request to the target server through the proxy server. There are several ways proxies can be useful when scraping. The main features are anonymity, its location, and if it's static or rotating. The most important players in the field allow their customers to choose the final location of the proxies, like a data center, a mobile phone, or a residential IP, to mask the origin of the requests.