On top of Quic, Cloudflare is making use of the open-source Wireguard project for the data encapsulation VPN part of Warp. Prince said that Wireguard is a more efficient and modern approach to VPN. Cloudflare has extended the Wireguard open-source effort with its own BoringTun code that enables it to run well on mobile devices, with an implementation written in the Rust programming language.