Digital certificates quietly underpin almost everything that matters in modern IT: public websites, internal systems, APIs, and machine-to-machine traffic. For years, many teams treated renewal as a calendar exercise—tolerable when validity stretched beyond a year. That era is ending.New security expectations are dramatically reducing maximum certificate validity—from periods of 398 days down to as little as 47 days by 2029. The shift is not theoretical: the first major reduction—to 200 days—began in March 2026. Shorter validity does not merely mean “more paperwork.” It means teams will need to renew certificates roughly 8x as often as before. Manual tracking, spreadsheets, and heroic weekend rotations don’t scale to that rhythm; they create drag, inconsistency, and blind spots.This is not a niche web-server problem. Public-facing services, private infrastructure, APIs, and automated workloads are all in scope. Nearly half of enterprises experienced downtime last year specifically because of manual certificate management errors, which should be a warning that operational fragility has real revenue and reputation cost.The result of these coming changes is that organizations need to automate certificate management now, not after the first preventable outage. Waiting until renewal volume spikes is how incidents become “normal.”Red Hat delivers automated certificate managementThe answer is not more headcount or tighter spreadsheets. It’s an enterprise-grade certificate management system built for automation. Red Hat Certificate System is an enterprise PKI platform from Red Hat, built on Dogtag PKI with more than 20 years of sustained development. It’s designed for on-premise deployment so you retain and control your own keys with hardware security module (HSM) support.The core principle is simple and hard to retrofit later: automation is not a bolt-on; it’s foundational. That is what makes Certificate System suited to a world where renewal frequency rises and error tolerance falls.Here is how the pieces fit together at a high level.Clients—web servers, IoT devices, workstations, and other endpoints—enroll and renew using standard protocols such as ACME, EST, or CMC. Those requests terminate at the Certificate System certificate authority (CA), which connects to Directory Server for identity and policy glue and to an HSM for key protection where required.