Visual guides
An SSL/TLS certificate encrypts the HTTPS connection and confirms the presented domain matches the certificate.
Protects traffic between browser and server.
The certificate must cover the queried name.
A certificate close to expiration needs renewal or automation.
The audit checks whether a certificate exists, validity dates, issuer and general HTTPS signals.
A valid certificate does not guarantee the whole app is secure, but it is a minimum baseline for internet operation.
Forgotten expirations, certificates for another domain, incomplete chains or mixed HTTP/HTTPS configurations cause visible user errors.
FAQ
People often say SSL by habit, but the modern protocol in use is TLS.
No. It encrypts transport, but it does not fix application, server or credential issues.