HashiCorp's Boundary is an open-source project that enables secure access to dynamic hosts and services through fine-grained authorization without requiring direct network access, leveraging ephemeral targets and credential abstraction to minimize the attack surface for adversaries. The concept of ephemeral infrastructure represents a quantum leap forward in security, where systems exist only when needed, making it extremely difficult for attackers to compromise them. Boundary's architecture utilizes HashiCorp products like Terraform, Nomad, Consul, and Vault to dynamically provision targets just-in-time, ensuring that constructs like identity credentials or access rights are abstracted from the infrastructure. This approach provides a highly secure environment, where an adversary would need to prosecute a perfect attack to compromise a target, surrounded by strong encryption via TLS and protected by credential abstraction, making it nearly impossible to steal sensitive information.