iCloud Private Relay, a privacy feature released by Apple in 2021 as part of iCloud+, enhances user privacy while browsing the web in Safari. It works by routing internet traffic through two separate relays, masking the user's IP address and location. This prevents websites and network providers from tracking browsing activity. Users concerned about online privacy should consider enabling iCloud Private Relay, although it's important to note it's only available to iCloud+ subscribers.