QxEDGE is a hyper-converged Hardware Security Platform that combines Crypto4A’s quantum-safe HSM with multiple general-purpose and confidential compute processing engines in a single appliance. Described as "HSM as a Platform," QxEDGE enables organisations to host security applications — including PKI, code signing, key management, and secrets management — alongside the HSM rather than as separate infrastructure components.

Unsung implements QxEDGE for UK customers requiring integrated, quantum-safe cryptographic and compute capabilities at the edge or within data centre environments, particularly in critical infrastructure and defence contexts.

Traditional HSM deployments require separate infrastructure for the HSM itself and the security applications that depend on it. PKI software, signing services, key management platforms, and secrets vaults each run on their own servers, connecting to the HSM over the network. This separation creates integration complexity, increases the attack surface, and makes it difficult to deploy cryptographic services at the edge where latency and connectivity constraints demand self-contained solutions.

For organisations operating in distributed environments — transport networks, defence installations, or edge computing locations — maintaining separate HSM and application infrastructure at each site is often impractical. A converged platform that provides both cryptographic hardware and compute capabilities in a single deployable unit addresses this challenge.