SWA Cloud Services added PKI as one of their cloud security controls.

Public Key Infrastructure (PKI) is a framework used to manage digital certificates and public-key encryption. It enables secure electronic transfer of information for a range of network activities such as e-commerce, internet banking, and confidential email. PKI is fundamental to the management of encryption keys and digital certificates, ensuring the secure exchange of data over networks and verification of identity.

References:The CREST CPTIA program covers the importance of PKI in cloud security controls, emphasizing its role in establishing and maintaining a secure cloud computing environment.