Description: The operational capacity of a Public Key Infrastructure (PKI) refers to its ability to effectively and efficiently carry out the functions for which it was designed. This includes the generation, distribution, and management of cryptographic keys, as well as the issuance and validation of digital certificates. A robust PKI must ensure the confidentiality, integrity, and authenticity of information, allowing entities to communicate securely in a digital environment. Key features of a PKI include scalability, interoperability, and resilience, meaning it must be able to adapt to a growing number of users and devices, function with different systems and protocols, and quickly recover from failures or attacks. Operational capacity also implies the implementation of appropriate security policies and ongoing training for the personnel responsible for its management. In an increasingly interconnected world, the operational capacity of a PKI becomes crucial for trust in electronic transactions and the protection of sensitive data, making it an essential component of any organization’s security infrastructure.