This article details the development and significance of the ACME protocol, which underpins Let’s Encrypt, an automated certificate authority. It explores the challenges of implementing encryption across the web and highlights the evolution of ACME in promoting widespread HTTPS adoption.

Let's Encrypt has introduced short-lived certificates with a validity of less than 7 days. Users can obtain these certificates using ACME clients, and Google Trust Services also offers similar options with customizable validity periods. Automation simplifies the management of these short-term certificates.

NGINX has introduced a preview release of native support for the ACME protocol through the ngx_http_acme_module, allowing users to request, install, and renew SSL/TLS certificates directly via NGINX configuration. This implementation simplifies certificate management by reducing manual errors and reliance on external tools, while enhancing security and workflow efficiency. The article outlines the ACME workflow, its benefits, and encourages users to start utilizing the new feature.