Thecertificate lifecycleconsists of several key stages to ensure secure and trusted digital operations: 

• Certificate Request: A user, system, or device applies for a certificate, submitting identity information to a trustedCertificate Authority (CA). 
• Issuance: The CA verifies the requestor’s identity and issues a digital certificate that binds the identity to apublic key. 
• Installation and Deployment: The certificate is installed on applications, servers, or devices to enable secure communication and authentication. 
• Monitoring: Certificates are continuously monitored to detect vulnerabilities, prevent expiration, and ensure compliance with security policies. 
• Renewal: Before a certificate expires, it is renewed to maintain uninterrupted trust and security

Each stage in the lifecycle ensures certificates function securely and effectively. Proper management prevents expired or vulnerable certificates from exposing systems to threats likeman-in-the-middle attacks. Organizations in industries such asIoT,healthcare, andenterprise ITmust diligently follow these stages to maintain security and compliance.