SSL Expiry
SSL expiry is the date an SSL/TLS certificate stops being valid, after which browsers reject the connection.
Every TLS certificate has a fixed validity period. Once it expires, every visitor sees a full-page security warning — a complete, self-inflicted outage that is entirely preventable.
Expiry monitoring checks the remaining validity and warns days in advance, giving you time to renew before users are affected. It is one of the highest-value, lowest-effort checks you can run.
Related terms
SSL/TLS CertificateAn SSL/TLS certificate is a digital credential that enables encrypted HTTPS connections and proves a site owns its domain.IncidentAn incident is a recorded event representing a detected problem with a service, from the moment it is confirmed until it is resolved.UptimeUptime is the percentage of time a service is available and responding correctly over a given period.
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