In today’s digital landscape, securing data and applications is paramount. Among the myriad of security solutions, the management of digital certificates stands as a crucial component. AWS Certificate Manager Private Certificate Authority (ACM PCA) offers a robust solution to manage this need effectively. In this post, we will explore the core concepts associated with AWS Private CA, including certificate authority, intermediate CAs, certificate chains, and the significance of different file formats like .crt, .key, and .pem.