Interface Control Document

An Interface Control Document (ICD) is a detailed reference that describes how two or more systems, components, or subsystems interact and connect with each other. It defines the communication methods, data formats, and physical or electronic interfaces to ensure everything works seamlessly together. Think of it as a blueprint that makes sure different parts of a project can "talk" and work together correctly, reducing misunderstandings and ensuring compatibility throughout development and operation. It’s essential for coordinating complex systems, especially in engineering and technology projects.