Takeaways from Tailscale’s Adoption of ARI

Since March 2023, Let’s Encrypt has been improving our resiliency and reliability via ACME Renewal Information ( ARI ). ARI makes it possible for our Subscribers to handle certificate revocation and renewal easily and automatically. A primary benefit of ARI is that it sets Subscribers up for success in terms of ideal renewal times in the event that Let’s Encrypt offers certificates with even shorter lifetimes than 90 days.