https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cust_contact/contact_center/finesse/finesse_1151/Admin/guide/CFIN_BK_C0CD262D_00_cisco-finesse-administration-guide-1151/CFIN_BK_C0CD262D_00_cisco-finesse-administration-guide-1151_chapter_01001.pdf

When the HTTPS protocol is used to access the administration console or agent desktop in Cisco Finesse, the primary and secondary servers accept only digital certificates that are issued by a certificate authority (CA).

A digital certificate is an electronic document that uses a digital signature to bind a public key with an identity, such as the name of a person or an organization, and the certificate is issued by a trusted third party, such as a certificate authority (CA). The digital certificate confirms the identity of the server and enables secure communication between the client and the server.

A certificate authority (CA) certificate is a type of digital certificate that is issued by a trusted third party, such as a certificate authority (CA), to verify the identity of an entity and establish trust.

https://www.cisco.com/c/en/us/support/docs/voice-unified-communications/finesse/118248-configure-certificates-finesse-00.html

https://www.globalsign.com/en/ssl-information-center/what-is-a-digital-certificate/