A proxy refers to an alternate IP address used to mask a device's actual IP, aiding in activities such as accessing blocked websites, managing online accounts, and collecting data from different geolocations. Proxies can be categorized into data center, residential, and mobile proxies, each offering distinct benefits such as anonymity and bypassing geo-restrictions. A proxy server acts as an intermediary that routes requests between a user and the target site through alternative IP addresses. Proxy services offer networks of these IP addresses, providing flexibility in internet usage, and are essential for tasks that require different IP types. Bright Data offers a comprehensive proxy network, featuring a large residential proxy network, account setup assistance, and 24/7 support, as highlighted by Roni Sarfati, a seasoned business development manager.