# Amazon Trust Services (ACM) — TLS certificate maximum validity by Certificate Authority: what each CA actually issues today

For Amazon Trust Services (ACM), profile or product is ACM-issued public; maximum validity (days) is 198; next announced reduction date is 2027-03-15; still issuing tls certificates is yes; notes is A reduction from the previous lifetime of 395 days. As of March 15, 2027, the maximum lifetime will be less than 100 days; as of March 15, 2029, less than 47 days, recorded from its source on 2026-08-18.

- **Certificate Authority:** Amazon Trust Services (ACM)
- **Profile or Product:** ACM-issued public _(our reading, not quoted from the source)_
- **Maximum validity (days):** 198 _(verified: appears in the quote below)_
- **Next announced reduction date:** 2027-03-15 _(our reading, not quoted from the source)_
- **Still issuing TLS certificates:** yes _(our reading, not quoted from the source)_
- **Notes:** A reduction from the previous lifetime of 395 days. As of March 15, 2027, the maximum lifetime will be less than 100 days; as of March 15, 2029, less than 47 days. _(our reading, not quoted from the source)_

## What the source says

> From today until March 15, 2027, the maximum lifetime for a public TLS certificate issued will be 198 days. This is a reduction from the previous lifetime of 395 days.

## Source

- https://aws.amazon.com/certificate-manager/faqs/

Last verified: 2026-08-18. Review by: 2026-09-17.
Part of [TLS certificate maximum validity by Certificate Authority: what each CA actually issues today](https://referencesource.org/ca-issuance-validity/).