Description: The Revocation Service is an essential component within the Public Key Infrastructure (PKI) that manages the revocation of digital certificates. These certificates are used to authenticate the identity of entities in digital environments, ensuring the security of communications and transactions. When a certificate is no longer valid, whether due to security compromises, expiration, or changes in the holder’s information, it is crucial that it be revoked to prevent misuse. The Revocation Service provides a mechanism to inform users and systems about the status of certificates, ensuring that only valid and trustworthy ones are used. This service can operate through Certificate Revocation Lists (CRLs) or via the Online Certificate Status Protocol (OCSP), allowing systems to verify the validity of a certificate in real-time. Effective implementation of a Revocation Service is fundamental to maintaining the integrity and trust in digital communications, as it prevents the use of certificates that may have been compromised or are no longer applicable.