Protect the weakest link of encryption
Dyadic applies a technology called secure Multiparty Computation to enable the storage and usage of cryptographic keys without ever having them in a single place, thereby eliminating the key as a single point of failure. This is being achieved practically by splitting a key into two random shares which are then stored on distinct, separate machines with high degree of segregation.
Each of these machines has a vHSM and each machine can use the cryptographic API that allows only encryption, decryption and signing. Key material export is impossible, as neither of the machines ever hold the key.