Key takeaway: Organizations that address only the next validity reduction will need to fundamentally rebuild their certificate management in a few years instead of implementing automated renewal solutions now.
The validity period of publicly trusted SSL certificates is declining continuously — from 200 days since early 2026 to 100 days starting 2027 to approximately 47 days starting 2029. Manual renewal processes will become a bottleneck at this frequency.
The maximum validity of public SSL certificates is being significantly reduced in three steps. Since early 2026, the validity period is 200 days; from 2027 it drops to approximately 100 days, from 2029 to about 47 days. This acceleration is the result of stricter requirements from certificate authorities and browser manufacturers to enhance the security of the public key infrastructure.
For CTOs, this represents a fundamental challenge to existing operational processes. Manual renewal workflows, which have historically been performed annually or semi-annually, cannot be scaled linearly to 47-day cycles. Every delay or oversight results in expired certificates — with consequences for trust, SEO rankings, and service availability.
Only automated solutions such as ACME-based certificate management systems enable reliable management at this cadence. CTOs should not approach this transformation incrementally by addressing only the next reduction, but should instead target complete automation architecturally — otherwise a technical debt accrues that will need to be resolved by 2029 at the latest.
Source: www.security-insider.de · Published 16 July 2026
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