Boundary is an open source project that enables secure remote access to dynamic hosts and services with fine-grained authorization, reducing the need for direct network access. It solves challenges of traditional products that grant access to systems, providing a principle of least privilege approach to simplify workflows and reduce risk. Boundary authenticates and authorizes users based on trusted identity and roles, defining logical sets of systems and applications, and removing brittleness associated with static IP addresses. The project aims to simplify secure access, reducing the attack surface and complexity associated with traditional solutions, and is available as an open source project under active development.