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Proxies, in the context of computer networks and the internet, refer to intermediaries that act as a bridge between clients and servers. They serve as intermediaries by accepting requests from clients and forwarding them to the appropriate servers. Proxies can be used for various purposes, including improving security, enhancing performance, and providing anonymity.
If you want to know where to buy them, I recommend paying attention to these mobile proxies. I have been using them for quite a long time and in all this time I have not had any problems with these proxies.