DigiCert TLS/SSL Certificates are digital certificates that encrypt data transmitted between browsers, websites, and web servers using Transport Layer Security (TLS) protocols. They are used to secure internet connections, verify the identity of websites, and ensure data is transmitted privately and without modification or theft. DigiCert offers several certificate tiers across two validation types: **Organization Validation (OV):** - Basic OV: Business-level validation with unlimited certificate issuance/replacement, lifecycle automation, 24x5 support, and access to the CertCentral management portal. - Secure Site OV: Adds priority order processing, DigiCert Smart Seal, domain reputation monitoring, and vulnerability assessment scans. - Secure Site Pro OV: Adds brand protection via Certificate Transparency (CT) log monitoring on top of Secure Site OV features. **Extended Validation (EV):** - Basic EV, Secure Site EV, and Secure Site Pro EV mirror the OV tiers but with Extended Validation, which requires a more rigorous identity verification process. Certificates are available for single domains, wildcard domains (covering unlimited subdomains), and multi-domain configurations. All plans are offered as 12-month auto-renewing subscriptions. Certificate lifecycle management is handled through the DigiCert CertCentral portal, which supports complete automation including renewals and replacements.