SIGNALInfrastructure Software·Jul 6, 2026, 3:00 PMSignal50Short term

AWS Certificate Manager now supports the ACME protocol for public certificates

Source: AWS What's New

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AWS Certificate Manager (ACM) now allows you to provision a fully managed ACME server endpoint that issues public TLS certificates with a 45 day validity from Amazon Trust Services using any ACMEv2-compatible client, including Certbot, cert-manager for Kubernetes, and acme.sh. With the CA/Browser Forum mandating 47-day certificate lifetimes by 2029, manual management of public certificates becomes untenable. ACME support in ACM gives developers a standards-based path to fully automate certificate issuance and renewal. PKI administrators can create managed ACME endpoints with centralized govern

Why this matters
Why now

The CA/Browser Forum's mandate for shorter certificate lifetimes by 2029 is pressuring providers to automate certificate management solutions.

Why it’s important

This development simplifies and automates a critical component of internet security, reducing operational overhead and improving compliance for businesses using AWS.

What changes

Developers can now fully automate the issuance and renewal of public TLS certificates on AWS using standard ACME clients, removing the need for manual intervention.

Winners
  • · AWS customers
  • · DevOps teams
  • · Cloud security providers
Losers
  • · Manual certificate management services
Second-order effects
Direct

Increased adoption of automated certificate management, leading to fewer certificate-related outages and expired certificates.

Second

Enhanced overall security posture for applications and services hosted on AWS due to consistently updated TLS certificates.

Third

Potential for other cloud providers to accelerate their own ACME support to remain competitive in secure certificate management services.

Editorial confidence: 90 / 100 · Structural impact: 25 / 100
Original report

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