Arqit SKA Platform™ by ArQit is a symmetric key agreement platform that simplifies and strengthens encryption globally. It allows organizations to transition from complex PKI infrastructure and reliance on third parties to a cloud-designed encryption platform for connected devices. Arqit SKA Platform is offered as Platform as a Service and as a private instance. It employs cloud-based symmetric key agreement for enhanced information security. The platform is designed to be scalable, policy-based, and quick to deploy, requiring zero infrastructure. It supports quantum-safe encryption, ensuring data security now and in the future. The platform is suitable for securing regional networks, mobile devices, IoT deployments, and blockchains. It uses symmetric cryptography for authentication and key agreement, making it fast and efficient for devices of any size. The platform allows easy addition and deletion of devices from a network and controls device communication through security policy. It is compliant with US National Security Memorandum 10 and NSA CSFC Symmetric Key Management Requirements Annex 2, and it is usable with existing data encryption standards such as AES256. The platform ensures that the cloud service never knows or stores the final key, providing a trustless security architecture.